Battery pack with waterproof and buffer integrated structure

Abstract

The utility model provides a kind of battery pack with waterproof and buffer integrated structure, including battery pack body, the bottom of battery pack body is equipped with containing shell, the top of battery pack body is equipped with protective shell, the inside of protective shell and containing shell is provided with buffer mechanism, and sealing mechanism is provided between protective shell and containing shell;The protective shell and containing shell for realizing installation protection to battery pack body are set, the handle of setting is convenient overall to fetch, the plug for realizing the electrical connection between battery pack body and external equipment is set, the sealing mechanism for increasing the connection sealing between protective shell and containing shell is set, the buffer mechanism for realizing the shock absorption protection of battery pack body inside protective shell and containing shell is set, avoid the moisture of outside into the inside of protective shell and containing shell in actual use and avoid vibration to cause battery pack body damage in use.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, specifically to a battery pack with an integrated waterproof and cushioning structure. Background Technology

[0002] With the widespread application of electronic devices and the rapid development of the electric vehicle industry, battery packs, as the core component for providing power, are receiving increasing attention for their performance and safety. They are widely used in fields such as electric bicycles, emergency lighting, and battery swapping cabinets. In actual use, battery packs often face various harsh environments, such as humidity, rain, vibration, and impact.

[0003] In terms of waterproofing, most existing battery packs use simple sealants or gaskets for sealing. However, this method is prone to failure under long-term use or when subjected to significant external impacts, allowing moisture to penetrate the battery pack, damaging battery components and affecting battery performance and lifespan. In terms of cushioning, some battery packs reduce the impact of vibration and shock by adding cushioning materials such as sponge or rubber inside the outer shell. However, these cushioning structures are often independent of the waterproofing structure, which not only increases the size and weight of the battery pack but also results in poor synergy between waterproofing and cushioning. Utility Model Content

[0004] The present invention aims to solve the problems mentioned in the background art by providing a battery pack with an integrated waterproof and buffer structure.

[0005] The specific technical solution is as follows: A battery pack with an integrated waterproof and cushioning structure includes a battery pack body, a housing shell fitted at the bottom of the battery pack body, a protective shell fitted at the top of the battery pack body, a cushioning mechanism provided inside the protective shell and the housing shell, a sealing mechanism provided between the protective shell and the housing shell, a plug inserted into the right side of the housing shell, and the left side of the plug electrically connected to the right side of the battery pack body via a wire, and a handle fixedly installed on the right side of the protective shell; The buffer mechanism includes two protective rings disposed between the protective shell and the holding shell, and two protective plates disposed inside the protective shell and the holding shell, with the outer side of the battery pack body contacting the outer side of the protective rings and the outer side of the protective plates respectively.

[0006] As a preferred embodiment of this utility model, a first buffer rubber strip is fixedly installed between the two protective rings and a second buffer rubber strip is fixedly installed inside the protective plate.

[0007] As a preferred embodiment of this utility model, the inner sides of the protective shell and the holding shell that are relatively close to each other are provided with uniformly distributed limiting grooves, and the limiting grooves are provided with limiting blocks inside, and one side of the limiting block is fixedly connected to the outer side of the outer protective ring.

[0008] As a preferred embodiment of this utility model, the protective plate and the second buffer rubber strip are made of thermally conductive rubber.

[0009] As a preferred embodiment of this utility model, the sealing mechanism includes a sealing gasket sleeved on the outside of the plug, one side of the sealing gasket contacting the outside of the housing, and a nut threadedly connected to the outside of the plug, the left side of the nut contacting the right side of the sealing gasket.

[0010] As a preferred embodiment of this utility model, the protective shell and the container shell are provided with mounting cavities on their relatively close sides, and the mounting cavities are provided with sealing strips.

[0011] As a preferred embodiment of this utility model, the protective shell has four through cavities inside, and bolts are inserted into the through cavities. The bottom of the bolts penetrates into the interior of the housing and is connected to the housing by threads.

[0012] This utility model has the following beneficial effects: 1. The joint between the protective shell and the housing shell forms the first waterproof barrier through "installation cavity + sealing strip": the sealing strip fills the installation cavity and fits tightly with the two shells, which can prevent rainwater and dew from seeping in from the shell joint; the penetration point between the plug and the housing shell forms the second waterproof barrier through "sealing gasket + nut": when the nut is tightened, it squeezes the sealing gasket, making it tightly wrap the gap between the plug and the hole, preventing water from entering from the plug. The double seal covers the two high-risk water seepage points of "shell joint" and "component penetration", and the waterproof rating can reach IP65, which is far superior to the traditional unsealed battery pack design, and is suitable for outdoor equipment, humid industrial environments and other scenarios.

[0013] 2. The buffer mechanism adopts a three-dimensional design of "side protective rings + top / bottom protective plates": the protective rings wrap around the sides of the battery pack body, and together with the first buffer rubber strip between the rings, when the battery pack is subjected to lateral impact, the rubber strip absorbs the impact force through deformation; the protective plates cover the top and bottom of the battery pack, and the second buffer rubber strip inside can resist vertical vibration, preventing the battery cells from becoming loose due to vibration. The three-dimensional buffer is suitable for scenarios such as power tools and mobile devices, reducing the probability of battery damage due to external forces. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of a battery pack with an integrated waterproof and buffer structure provided for an embodiment of this utility model; Figure 2 A schematic diagram of the battery pack body structure with an integrated waterproof and buffer structure provided for an embodiment of this utility model; Figure 3 A schematic diagram of the plug structure of a battery pack with an integrated waterproof and buffer structure provided for an embodiment of this utility model; Figure 4 A schematic diagram of the battery pack body holding mechanism of the battery pack with an integrated waterproof and buffer structure provided for an embodiment of this utility model; Figure 5 A schematic diagram of the housing structure of a battery pack with an integrated waterproof and buffer structure provided for an embodiment of this utility model; Figure 6 A schematic diagram of the protective shell structure of a battery pack with an integrated waterproof and buffer structure provided for an embodiment of this utility model; Figure 7 A schematic diagram of the buffer mechanism structure of a battery pack with an integrated waterproof and buffer structure provided for an embodiment of this utility model; Figure 8 A schematic diagram of the protective plate structure of a battery pack with an integrated waterproof and buffer structure provided for an embodiment of this utility model.

[0015] In the attached diagram: 1. Battery pack body; 2. Protective shell; 3. Container shell; 4. Plug; 5. Handle; 6. Buffer mechanism; 601. Protective ring; 602. Protective plate; 603. Limiting groove; 604. First buffer rubber strip; 605. Limiting block; 606. Second buffer rubber strip; 7. Sealing mechanism; 701. Sealing gasket; 702. Sealing strip; 703. Mounting cavity; 8. Through cavity; 9. Bolt; 10. Nut. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0018] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it 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 based on the specific circumstances.

[0020] Example The battery pack provided in this embodiment has an integrated waterproof and buffer structure, such as Figures 1-8 As shown, the battery pack includes a battery pack body 1, a housing shell 3 fitted at the bottom of the battery pack body 1, a protective shell 2 fitted at the top of the battery pack body 1, a buffer mechanism 6 inside the protective shell 2 and the housing shell 3, a sealing mechanism 7 between the protective shell 2 and the housing shell 3, a plug 4 inserted on the right side of the housing shell 3, and an electrical connection between the left side of the plug 4 and the right side of the battery pack body 1 via a wire, and a handle 5 fixedly installed on the right side of the protective shell 2. The protective shell 2 and the housing shell 3 are used to protect the battery pack body 1, the handle 5 facilitates the overall handling, the plug 4 is used to connect the battery pack body 1 to external devices, the sealing mechanism 7 is used to increase the sealing of the connection between the protective shell 2 and the housing shell 3, and the buffer mechanism 6 is used to provide shock absorption and protection for the battery pack body 1 inside the protective shell 2 and the housing shell 3, preventing external moisture from entering the interior of the protective shell 2 and the housing shell 3 during actual use and preventing vibration from damaging the battery pack body 1 during use. The buffer mechanism 6 includes two protective rings 601 disposed between the protective shell 2 and the holding shell 3, and two protective plates 602 disposed on the inner side of the protective shell 2 and the holding shell 3. The outer side of the battery pack body 1 contacts the outer side of the protective rings 601 and the outer side of the protective plates 602 respectively. The protective rings 601 are used to buffer and dampen the sides of the battery pack body 1, and the protective plates 602 are used to buffer and protect the top and bottom of the battery pack body 1 to prevent damage caused by vibration during actual use.

[0021] A first buffer rubber strip 604 is fixedly installed between the two protective rings 601 and is evenly distributed. A second buffer rubber strip 606 is fixedly installed inside the protective plate 602. The first buffer rubber strip 604 is designed to compress the battery pack body 1 when it vibrates, thereby causing the first buffer rubber strip 604 to deform and thus buffering the battery pack body 1.

[0022] The inner sides of the protective shell 2 and the holding shell 3, which are relatively close to each other, are provided with evenly distributed limiting grooves 603. A limiting block 605 is provided inside the limiting groove 603. One side of the limiting block 605 is fixedly connected to the outer side of the outer protective ring 601. The limiting groove 603 and the limiting block 605 are used to realize the installation between the protective ring 601 and the protective shell 2 and the holding shell 3, so as to facilitate the subsequent protection and limiting of the battery.

[0023] The protective plate 602 and the second buffer rubber strip 606 are made of thermally conductive rubber. The use of thermally conductive rubber in the protective plate 602 and the second buffer rubber strip 606 allows the heat generated by the battery pack body 1 during actual use to be conducted to the protective shell 2 and the housing shell 3, thereby facilitating heat dissipation.

[0024] The sealing mechanism 7 includes a sealing gasket 701 sleeved on the outside of the plug 4. One side of the sealing gasket 701 contacts the outside of the housing 3. The plug 4 is threaded with a nut 10. The left side of the nut 10 contacts the right side of the sealing gasket 701. The sealing gasket 701 is used to seal the hole through which the plug 4 passes through the inside of the housing 3, so as to prevent external water from entering the inside of the housing 3 through this hole and causing damage to the battery pack body 1.

[0025] The protective shell 2 and the housing shell 3 are respectively provided with a mounting cavity 703 on the side that is relatively close to each other. A sealing strip 702 is provided inside the mounting cavity 703. The mounting cavity 703 is used to accommodate the sealing strip 702. The sealing strip 702 is used to increase the connection and sealing between the housing shell 3 and the protective shell 2, and to prevent external water from entering the interior through the connection between the protective shell 2 and the housing shell 3 and causing damage to the battery pack body 1.

[0026] The protective shell 2 has four through cavities 8 inside, and bolts 9 are inserted inside the through cavities 8. The bottom of the bolts 9 penetrates into the interior of the holding shell 3 and is connected to the holding shell 3 by threads. The through cavities 8 are used to accommodate the bolts 9, and the bolts 9 are used to connect the protective shell 2 and the holding shell 3.

[0027] Working principle: Component pre-assembly and foundation positioning Pre-installed buffer mechanism Assembly of the protective rings with the protective shell and the holding shell: The two protective rings 601 are installed on the inner side of the protective shell 2 and the holding shell 3 through the "limiting block 605-limiting groove 603". The limiting block 605 on the outer side of the protective ring 601 is aligned with the limiting groove 603 on the inner wall of the protective shell 2 and the holding shell 3. After sliding insertion, the protective ring is positioned and fixed, ensuring that the protective ring 601 fits the shell and does not deviate. At the same time, the first buffer rubber strip 604 between the two protective rings 601 extends naturally to form a side buffer base structure.

[0028] Assembly of the protective plate and the housing: Fix the two protective plates 602 to the top inner side of the protective housing 2 and the bottom inner side of the housing 3 respectively. The second buffer rubber strip 606 inside the protective plate 602 remains in its natural state, forming a buffer layer at the top and bottom. At this time, the protective plate 602 and the protective ring 601 form an enclosing space, reserving a suitable position for the subsequent placement of the battery pack body 1.

[0029] Battery pack body installation The battery pack body 1 is placed into the pre-assembled buffer space from the joint between the protective shell 2 and the holding shell 3, so that the side of the battery pack body 1 is in close contact with the protective ring 601, and the top and bottom are respectively attached to the protective plates 602 on the inner side of the protective shell 2 and the holding shell 3. At this time, the weight of the battery pack body 1 and the contact pressure cause the first buffer rubber strip 604 and the second buffer rubber strip 606 to undergo slight deformation, initially forming a buffer pre-tightening force to prevent the battery pack body 1 from shaking inside the shell.

[0030] II. Shell Assembly and Stable Fixing Bolted connection and housing seal Align the splicing surfaces of the protective shell 2 and the container shell 3 so that the bolt holes at the bottom of the protective shell 2 correspond precisely to the threaded holes at the top of the container shell 3; pass the four bolts 9 through the through cavity 8 of the protective shell 2 and screw them into the threaded holes of the container shell 3 until the heads of the bolts 9 are fully embedded in the through cavity 8. The axial force of the bolts will tightly splice the protective shell 2 and the container shell 3 to form a complete closed shell.

[0031] During the splicing process, the sealing strip 702 inside the mounting cavity 703 of the splicing surface of the protective shell 2 and the holding shell 3 is squeezed, produces elastic deformation and fills the gap between the two shells, forming the first waterproof barrier and preventing external moisture from seeping in from the splicing seam.

[0032] Plug and sealing gasket assembly Electrically connect the left side of plug 4 to the right electrode of battery pack body 1 via a wire to ensure a stable circuit path; then, pass the right side of plug 4 through the hole on the right side of housing 3, and put a sealing gasket 701 on the outside of plug 4 so that one side of the sealing gasket 701 fits against the outside of housing 3; finally, thread nut 10 onto the outside of plug 4 and tighten nut 10 clockwise until the left side of nut 10 compresses the sealing gasket 701 and deforms, tightly wrapping the gap between plug 4 and hole, forming a second waterproof barrier to prevent moisture from entering through the plug.

[0033] Buffer protection mechanism Side impact buffer When the battery pack body 1 is subjected to a lateral impact, the external force first acts on the side of the protective shell 2 or the holding shell 3, and the shell transmits the impact force to the inner protective ring 601. After the protective ring 601 is subjected to force, it squeezes the first buffer rubber strips 604 on both sides. The first buffer rubber strips 604 absorb the impact force through elastic deformation and evenly distribute the remaining force to other parts of the shell, so as to avoid the impact force acting directly on the battery pack body 1 and prevent the battery cells from detaching from the tabs and the shell from cracking due to lateral force.

[0034] Vertical vibration buffer When the battery pack is in a vibrating environment, the vertical vibration causes the battery pack body 1 to shake up and down, and the top and bottom press against the protective plate 602; the second buffer rubber strip 606 inside the protective plate 602 cancels the vibration energy through repeated deformation, reduces the vibration amplitude of the battery pack body 1, avoids the internal structure of the battery from loosening due to high frequency vibration, and maintains the stability of the cell performance.

[0035] Waterproof sealing mechanism Waterproofing of joints The sealing strip 702 is made of EPDM rubber, which has excellent elasticity and weather resistance. Under the pre-tightening force of the bolts of the protective shell 2 and the holding shell 3, the sealing strip always fits tightly against the splicing surface of the two shells. Even if the shell expands and contracts due to temperature changes, the sealing strip can adapt to the gap changes through deformation and continuously prevent rainwater and dew from seeping in from the splicing seam.

[0036] Waterproof plug penetration The sealing gasket 701 is made of nitrile rubber, which has good sealing performance and oil resistance. The axial pressure generated after the nut 10 is tightened makes the sealing gasket tightly wrap the hole between the plug 4 and the housing 3, forming a triple fit of "plug-sealing gasket-housing". Even if the plug 4 shakes slightly due to plugging and unplugging, the sealing gasket can maintain a sealed state, preventing moisture from entering the housing through the gaps in the hole and preventing the battery electrodes from getting damp and short-circuiting.

[0037] Thermal conduction and heat dissipation synergistic mechanism Heat conduction path During the charging and discharging process, the battery pack body 1 generates heat, which is first transferred to the protective plate 602 and the protective ring 601 that are attached to it. Since the protective plate 602 and the second buffer rubber strip 606 are made of thermally conductive rubber, the heat can be quickly conducted through the protective plate to the protective shell 2 and the holding shell 3. The protective shell 2 and the holding shell 3 are made of ABS engineering plastic or aluminum alloy, which have good heat dissipation performance and can quickly dissipate the heat to the external environment, forming a complete heat dissipation path of "battery → thermally conductive buffer component → shell → outside".

[0038] Synergy of heat dissipation and buffering The thermally conductive rubber material retains excellent elasticity while transferring heat, without affecting the cushioning performance. Compared with traditional insulating cushioning materials, the thermally conductive design can control the operating temperature of the battery pack body 1 to below 35℃, avoiding capacity decay of the battery due to high temperature and extending the battery cycle life.

[0039] Use and Maintenance Daily use operation Carrying and moving: The battery pack can be carried by one person via the handle 5 on the right side of the protective shell 2. It is ergonomically designed to reduce hand fatigue when carrying. Device docking: Simply insert plug 4 into the interface of the external device to achieve electrical connection between the battery pack body 1 and the external device. No additional wiring is required, making operation convenient.

[0040] Post-maintenance and repair Housing disassembly: When it is necessary to inspect the battery pack body 1, use a tool to unscrew the four bolts 9 of the protective shell 2 to separate the protective shell from the housing shell and take out the battery pack body for maintenance; Replacement of sealing components: If the sealing strip 702 and sealing gasket 701 show signs of aging, the old components can be removed directly from the outside of the mounting cavity 703 and plug 4, replaced with new components, and reassembled to ensure continuous and stable waterproof performance.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery pack with an integrated waterproof and cushioning structure, characterized in that, The battery pack body (1) is provided with a holding shell (3) at the bottom and a protective shell (2) at the top. A buffer mechanism (6) is provided inside the protective shell (2) and the holding shell (3). A sealing mechanism (7) is provided between the protective shell (2) and the holding shell (3). A plug (4) is inserted through the right side of the holding shell (3). The left side of the plug (4) is electrically connected to the right side of the battery pack body (1) through a wire. A handle (5) is fixedly installed on the right side of the protective shell (2). The buffer mechanism (6) includes two protective rings (601) disposed between the protective shell (2) and the holding shell (3) and two protective plates (602) disposed on the inner side of the protective shell (2) and the holding shell (3), and the outer side of the battery pack body (1) is in contact with the outer side of the protective rings (601) and the protective plates (602) respectively.

2. The battery pack with an integrated waterproof and buffer structure according to claim 1, characterized in that, A uniformly distributed first buffer rubber strip (604) is fixedly installed between the two protective rings (601), and a uniformly distributed second buffer rubber strip (606) is fixedly installed inside the protective plate (602).

3. The battery pack with an integrated waterproof and buffer structure according to claim 1, characterized in that, The protective shell (2) and the holding shell (3) have evenly distributed limiting grooves (603) on their inner sides that are relatively close to each other. A limiting block (605) is provided inside the limiting groove (603). One side of the limiting block (605) is fixedly connected to the outer side of the outer protective ring (601).

4. The battery pack with an integrated waterproof and buffer structure according to claim 1, characterized in that, The protective plate (602) and the second buffer rubber strip (606) are made of thermally conductive rubber.

5. The battery pack with an integrated waterproof and buffer structure according to claim 1, characterized in that, The sealing mechanism (7) includes a sealing gasket (701) sleeved on the outside of the plug (4), one side of the sealing gasket (701) is in contact with the outside of the housing (3), and the outside of the plug (4) is threaded with a nut (10), the left side of the nut (10) is in contact with the right side of the sealing gasket (701).

6. The battery pack with an integrated waterproof and buffer structure according to claim 5, characterized in that, The protective shell (2) and the container shell (3) are provided with mounting cavities (703) on their relatively close sides, and a sealing strip (702) is provided inside the mounting cavity (703).

7. The battery pack with an integrated waterproof and buffer structure according to any one of claims 1-6, characterized in that, The protective shell (2) has four through cavities (8) inside. Bolts (9) are inserted into the through cavities (8). The bottom of the bolts (9) penetrates into the interior of the container shell (3) and is connected to the container shell (3) by threads.

Images