A sealing and waterproof device for a power battery

Abstract

The utility model provides a kind of sealing waterproof device for power battery, including placing box, and sealing mechanism is installed on placing box, and sealing mechanism includes cover plate, and placing box top snap-fit connection has cover plate, and cover plate is installed with locking mechanism, and cover plate bottom edge snap-fit connection has sealing ring, and sealing ring outside and placing box inner wall resist, and cover plate four edges inside portion is installed with air bag respectively, and air bag one end is connected with sealing ring respectively, and multiple air bag other end is connected with locking mechanism respectively, and placing box bottom is installed with protection mechanism;After closing cover plate by battery pack storage placing box inside, by the drive of locking mechanism, four air bags are extruded, air bag internal gas enters sealing ring inside, sealing ring expands and tightly resists with placing box inner wall, play sealing effect, by releasing locking mechanism, sealing ring and placing box inner wall separate, it is convenient to open cover plate, reduce the abrasion of sealing ring.

Description

Technical Field

[0001] This utility model belongs to the field of battery sealing technology, specifically relating to a sealing and waterproofing device for power batteries. Background Technology

[0002] In fields such as new energy equipment, industrial control equipment, and portable electronic devices, battery packs, as core power supply components, directly affect the reliability of equipment operation and battery lifespan due to their storage stability, sealing, and heat dissipation performance. Currently, most common battery pack storage devices on the market adopt simple box structures with cover designs. While these can achieve basic storage functions, they have revealed many technical defects in practical applications, making it difficult to meet the needs of high-precision and high-reliability equipment. From a sealing perspective, traditional storage devices typically use bolts or simple clips to directly fasten the cover to the casing, relying on a single rubber gasket for sealing. This structure presents two major problems: First, the rubber gasket is prone to aging and deformation due to long-term compression, leading to a gradual decline in sealing performance. External dust and moisture can easily seep into the casing, causing short circuits or corrosion of the battery pack's positive and negative terminals. Second, the disassembly and assembly process requires repeated removal of bolts or forced prying of clips, which is not only cumbersome but also prone to causing misalignment or damage to the rubber gasket, further shortening the lifespan of the sealing components and increasing maintenance costs. Therefore, developing a battery pack storage device with adaptive sealing and convenient disassembly and assembly is of significant practical importance for improving equipment operational reliability, extending battery life, and reducing maintenance costs. Utility Model Content

[0003] The purpose of this invention is to provide a sealing and waterproof device for power batteries to solve the above-mentioned problems. After the battery pack is placed inside the storage box, the cover is closed. Driven by the locking mechanism, four airbags are compressed, and the gas inside the airbags enters the sealing ring. The sealing ring expands and comes into close contact with the inner wall of the storage box, thus achieving a sealing effect. By releasing the locking mechanism, the sealing ring separates from the inner wall of the storage box, making it easier to open the cover and reducing wear on the sealing ring.

[0004] This utility model achieves the above objectives through the following technical solutions: A sealing and waterproofing device for power batteries includes a placement box with a sealing mechanism installed on it. The sealing mechanism includes a cover plate, which is engaged with the top of the placement box. A locking mechanism is installed on the cover plate, and a sealing ring is engaged with the bottom edge of the cover plate. The outer side of the sealing ring abuts against the inner wall of the placement box. Airbags are installed inside the four sides of the cover plate, with one end of each airbag connected to the sealing ring and the other end of each airbag connected to the locking mechanism.

[0005] As a preferred embodiment, the inner sidewall of the top of the placement box is provided with a slot, the slot is a frame structure, and the outer side of the sealing ring abuts against the inside of the slot.

[0006] As a preferred embodiment, an insulating plate is installed at the bottom of the cover plate, and a plurality of telescopic springs are connected between the top of the insulating plate and the bottom of the cover plate.

[0007] As a preferred embodiment, the locking mechanism includes a locking groove, the inner wall of the top of the placement box is provided with a plurality of locking grooves, and a plurality of vertically distributed locking plates are slidably connected inside the cover plate, with one end of the locking plate extending to the outside of the cover plate and engaging with the locking groove.

[0008] As a preferred embodiment, each of the plurality of card plates has a pusher block vertically connected to its bottom, and one end of each of the pushers contacts the airbag.

[0009] As a preferred embodiment, a drive disk is rotatably connected to the center of the cover plate. The drive disk has a square structure and grooves at its corners. The other ends of the four clamping plates have an arc-shaped structure, and the other ends of the four clamping plates respectively abut against the grooves at the four corners of the drive disk.

[0010] As a preferred embodiment, a torsion spring is rotatably connected to the top center of the cover plate, and the bottom of the torsion spring is fixedly connected to the top center of the drive disc. The torsion force of the torsion spring is greater than the thrust of the four airbags.

[0011] As a preferred embodiment, a drive groove is provided at the center of the top of the knob. The drive groove has a hexagonal structure and a protective pad is engaged inside the drive groove.

[0012] As a preferred embodiment, a protective mechanism is installed at the bottom of the placement box. The protective mechanism includes ventilation slots. The bottom of the placement box is provided with a plurality of equally spaced ventilation slots. The two ends of the ventilation slots extend to the outside of the placement box. A plurality of heat dissipation plates are installed on the inner side of the bottom of the placement box. The tops of the plurality of heat dissipation plates extend to the inside of the placement box, and the bottoms of the plurality of heat dissipation plates extend into the ventilation slots.

[0013] As a preferred embodiment, the bottom of the placement box is equipped with an anti-slip mat, and the bottom of the anti-slip mat has a toothed structure.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This utility model facilitates the storage of battery packs through the function of the placement box. The top of the placement box is sealed and protected by the closing of the cover. The locking mechanism compresses the four airbags, and the gas inside the airbags enters the sealing ring. The sealing ring expands and comes into close contact with the inner wall of the placement box, thus achieving a sealing effect. By releasing the locking mechanism, the sealing ring separates from the inner wall of the placement box, making it easier to open the cover and reducing wear on the sealing ring. The protective mechanism also provides heat dissipation protection for the placement box. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the card plate and the cover plate of this utility model; Figure 3 This is a schematic diagram of the connection structure between the heat sink and the placement box of this utility model; Figure 4 This is a schematic diagram of the connection structure between the card plate and the airbag of this utility model; Figure 5 This is a schematic diagram of the connection structure between the torsion spring and the torsion knob of this utility model.

[0016] The diagram shows: 1. Placement box; 2. Sealing mechanism; 201. Cover plate; 202. Slot; 23. Sealing ring; 204. Telescopic spring; 205. Insulating plate; 206. Airbag; 3. Locking mechanism; 301. Rotary knob; 302. Protective pad; 303. Slot plate; 304. Locking groove; 305. Push block; 306. Torsion spring; 307. Drive groove; 308. Groove; 309. Drive disc; 4. Protective mechanism; 401. Anti-slip pad; 402. Ventilation groove; 403. Heat dissipation plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1 to 5As shown, this utility model embodiment provides a sealing and waterproofing device for a power battery, including a placement box 1. A sealing mechanism 2 is installed on the placement box 1. The sealing mechanism 2 includes a cover plate 201, which is snapped onto the top of the placement box 1. A locking mechanism 3 is installed on the cover plate 201, and a sealing ring 23 is snapped onto the bottom edge of the cover plate 201. The outer side of the sealing ring 23 abuts against the inner wall of the placement box 1. Airbags 206 are installed inside the four sides of the cover plate 201, with one end of each airbag 206 connected to the sealing ring 23 and the other end of each airbag 206 connected to the locking mechanism 3. A slot 202 is provided on the inner side wall of the top of the placement box 1. The slot 202 has a frame-shaped structure, and the outer side of the sealing ring 23 abuts against the inside of the slot 202. The slot 202 allows the sealing ring 23 to expand and enter the slot 202, resulting in a better sealing effect. An insulating plate 205 is installed at the bottom of the cover plate 201. Multiple telescopic springs 204 are connected between the top of the insulating plate 205 and the bottom of the cover plate 201. Through the cooperation of the multiple telescopic springs 204, the insulating plate 205 slides telescopically at the bottom of the cover plate 201. After the cover plate 201 is closed with the placement box 1, the bottom of the insulating plate 205 abuts against the battery packs at different heights, so that the battery packs are installed stably.

[0019] Please see Figures 1 to 5 As shown, the locking mechanism 3 includes a locking groove 304. The inner wall of the top of the placement box 1 is provided with multiple locking grooves 304. Multiple vertically distributed locking plates 303 are slidably connected inside the cover plate 201. One end of the locking plate 303 extends to the outside of the cover plate 201 and engages with the locking groove 304. After the cover plate 201 and the placement box 1 are closed by opening multiple locking grooves 304, the four locking plates 303 are engaged with the inside of the locking groove 304 by driving the four locking plates 303, thereby limiting the position of the cover plate 201. Multiple locking plates 303 are vertically connected to push blocks 305 at their bottoms. One end of each push block 305 abuts against the airbag 206. With the installation of the push blocks 305, when the locking plate 303 is engaged with the locking groove 304, the locking plate 303 drives the push blocks 305 to squeeze the airbag 206, causing the gas inside the airbag 206 to enter the sealing ring 23. The airbag 206 is elastic. When there is no external force against the locking plate 303, it can be reset and released from the limit under the pressure of the airbag 206.

[0020] Please see Figures 1 to 5As shown, a drive disc 309 is rotatably connected to the center of the cover plate 201. The drive disc 309 has a square structure and grooves 308 at its corners. The other ends of the four locking plates 303 are arc-shaped, and the other ends of the four locking plates 303 respectively abut against the grooves 308 at the four corners of the drive disc 309. The installation of the drive disc 309 facilitates the contact of the four locking plates 303, thereby limiting the insertion of the locking plates 303 into the locking groove 304. By rotating the drive disc 309 by 45 degrees, the locking plates 303 are reset and retracted under the contact of the airbag 206, thereby releasing the limit. The grooves 308 are used to position the locking plates 303 and prevent the drive disc 309 from rotating arbitrarily.

[0021] Please see Figures 1 to 5 As shown, a rotary knob 301 is rotatably connected to the top center of the cover plate 201 via a torsion spring 306. The bottom of the rotary knob 301 is fixedly connected to the top center of the drive disc 309. The torque of the torsion spring 306 is greater than the thrust of the four airbags 206. The installation of the rotary knob 301 facilitates the drive control of your drive disc 309. The installation of the torsion spring 306 facilitates the rotary knob 301 to drive the turntable to maintain a certain rotation angle, thereby ensuring that the locking plate 303 is always engaged and limited with the locking groove 304. When the limit is released, the rotary knob 301 is rotated in the opposite direction, and the rotary knob 301 is freed from the elastic force of the torsion spring 306, and the locking plate 303 is reset without external force.

[0022] Please see Figures 1 to 5 As shown, a drive groove 307 is provided at the top center of the knob 301. The drive groove 307 has a hexagonal structure, and a protective pad 302 is engaged inside the drive groove 307. The opening of the drive groove 307 facilitates the drive control of the knob 301 by using a hex wrench to realize the opening and closing of the cover plate 201. The installation of the protective pad 302 plays a protective role for the drive groove 307, preventing sand and gravel from entering and affecting the subsequent operation of the knob 301.

[0023] Please see Figures 1 to 5 As shown, a protective mechanism 4 is installed at the bottom of the placement box 1. The protective mechanism 4 includes ventilation slots 402. Multiple equally spaced ventilation slots 402 are provided at the bottom of the placement box 1, with both ends extending to the outside of the placement box 1. Multiple heat dissipation plates 403 are installed on the inner side of the bottom of the placement box 1, with their tops extending to the inside of the placement box 1 and their bottoms extending into the ventilation slots 402. The ventilation slots 402 facilitate heat dissipation from the bottom of the placement box 1, and the installation of the multiple heat dissipation plates 403 facilitates the dissipation of heat from inside the placement box 1. An anti-slip pad 401 is installed at the bottom of the placement box 1. The bottom of the anti-slip pad 401 has a toothed structure. The installation of the anti-slip pad 401 ensures stable installation of the placement box 1 and the equipment, providing an anti-slip function.

[0024] In use, this invention first connects multiple battery packs electrically and installs them inside the placement box 1. Electrode posts are then installed on the outside of the placement box 1, connecting the positive and negative motors of the battery packs to the two electrode posts for easy power extraction. Next, the protective pad 302 is removed, and a hex wrench is inserted into the drive slot 307. The knob 301 is rotated 45 degrees. The knob 301 drives the drive disc 309 to rotate, causing the four locking plates 303 to retract without external force under the pressure of the four airbags 206, facilitating the closure of the cover plate 201 to the top of the placement box 1. The wrench is then removed, and the knob 301 retracts under the drive of the torsion spring 306. At this point, the drive disc 309 contacts the four locking plates 303, with the ends of the locking plates 303 inserted into the locking grooves 304 for limiting their position. The other ends of the locking plates 303 engage with the grooves 308 on the drive disc 309, providing a positioning function. Simultaneously, the locking plates 303 slide... Push block 305 abuts against airbag 206, and gas inside airbag 206 enters the sealing ring 23. The sealing ring 23 expands and abuts against the slot 202 on the inner wall of the placement box 1, so that the cover plate 201 and the placement box 1 have a good sealing effect. After the cover plate 201 is closed tightly, the insulating plate 205 at the bottom of the cover plate 201 abuts against the battery pack with the cooperation of multiple telescopic springs 204, so that the battery pack is installed more stably. When the drive disk 309 is rotated to release the limit, the airbag 206 is reset without external force, and the sealing ring 23 separates from the slot 202, which facilitates the disassembly of the cover plate 201, making the operation convenient and reducing the wear of the sealing ring 23. The bottom of the placement box 1 is equipped with a heat dissipation plate 403 and a ventilation slot 402, which plays a role in heat dissipation inside the placement box 1 and extends the service life of the battery pack. With the cooperation of anti-slip pad 401, it is easy to install the placement box 1 on the inside of the equipment and play an anti-slip role.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sealing and waterproof device for a power battery, comprising a housing (1), characterized in that: A sealing mechanism (2) is installed on the placement box (1). The sealing mechanism (2) includes a cover plate (201). The top of the placement box (1) is connected to the cover plate (201). A locking mechanism (3) is installed on the cover plate (201). A sealing ring (23) is connected to the bottom edge of the cover plate (201). The outer side of the sealing ring (23) abuts against the inner wall of the placement box (1). Airbags (206) are installed inside the four sides of the cover plate (201). One end of the airbag (206) is connected to the sealing ring (23), and the other end of the multiple airbags (206) is connected to the locking mechanism (3).

2. The sealing and waterproofing device for a power battery according to claim 1, characterized in that: The inner side wall of the top of the placement box (1) is provided with a slot (202), the slot (202) is a frame structure, and the outer side of the sealing ring (23) abuts against the inside of the slot (202).

3. A sealing and waterproofing device for a power battery according to claim 1, characterized in that: An insulating plate (205) is installed at the bottom of the cover plate (201), and a plurality of telescopic springs (204) are connected between the top of the insulating plate (205) and the bottom of the cover plate (201).

4. A sealing and waterproofing device for a power battery according to claim 1, characterized in that: The locking mechanism (3) includes a locking groove (304). The inner wall of the top of the placement box (1) is provided with multiple locking grooves (304). Multiple vertically distributed locking plates (303) are slidably connected inside the cover plate (201). One end of the locking plate (303) extends to the outside of the cover plate (201) and engages with the locking groove (304).

5. A sealing and waterproofing device for a power battery according to claim 4, characterized in that: Each of the multiple card plates (303) has a pusher (305) vertically connected to its bottom, and one end of each of the multiple pushers (305) is in contact with the airbag (206).

6. A sealing and waterproofing device for a power battery according to claim 5, characterized in that: The drive plate (309) is rotatably connected to the center of the cover plate (201). The drive plate (309) has a square structure and grooves (308) are provided at the corners of the drive plate (309). The other ends of the four clamping plates (303) have an arc-shaped structure and the other ends of the four clamping plates (303) respectively abut against the grooves (308) at the four corners of the drive plate (309).

7. A sealing and waterproofing device for a power battery according to claim 6, characterized in that: The cover plate (201) is rotatably connected to a torsion spring (306) at the top center. The bottom of the torsion spring (301) is fixedly connected to the top center of the drive disc (309). The torque of the torsion spring (306) is greater than the thrust of the four airbags (206).

8. A sealing and waterproofing device for a power battery according to claim 7, characterized in that: The top center of the knob (301) is provided with a drive groove (307), the drive groove (307) is a hexagonal structure, and a protective pad (302) is engaged inside the drive groove (307).

9. A sealing and waterproofing device for a power battery according to claim 1, characterized in that: The bottom of the placement box (1) is equipped with a protective mechanism (4), which includes a ventilation slot (402). The bottom of the placement box (1) is provided with a plurality of equally spaced ventilation slots (402). The two ends of the ventilation slots (402) extend to the outside of the placement box (1). A plurality of heat dissipation plates (403) are installed on the inner side of the bottom of the placement box (1). The top of the plurality of heat dissipation plates (403) extends to the inside of the placement box (1), and the bottom of the plurality of heat dissipation plates (403) extends into the ventilation slots (402).

10. A sealing and waterproofing device for a power battery according to claim 1, characterized in that: The bottom of the placement box (1) is equipped with an anti-slip mat (401), and the bottom of the anti-slip mat (401) has a toothed structure.

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