A battery packaging device that prevents swelling

Abstract

This utility model discloses an anti-expansion battery packaging device, belonging to the field of battery packaging technology. It addresses the problem that constantly opening heat dissipation holes allows external contaminants to easily enter the battery and damage it. The device includes a packaging box with a detachable cover on top. By incorporating a heat dissipation mechanism, when the battery's operating temperature increases, leading to increased temperature and pressure inside the packaging box, the sealing disc moves outward, disengaging from the heat dissipation hole to allow air circulation and release internal temperature and pressure. After the pressure is released, a third spring returns the sealing disc to the heat dissipation hole, blocking it. This replaces the traditional method of constantly opening the heat dissipation hole. The sealing disc automatically adjusts according to internal temperature and pressure changes, maintaining heat dissipation while effectively preventing the intrusion of external contaminants.

Description

Technical Field

[0001] This utility model belongs to the field of battery packaging technology, specifically relating to an anti-expansion battery packaging device. Background Technology

[0002] A storage battery is a device that converts chemical energy into electrical energy and releases it when needed. It is an electrochemical device that converts chemical energy into electrical energy through electrochemical reactions and releases the stored electrical energy through electrochemical reactions when needed. The storage battery contains chemical substances and generates gas, heat and current during normal operation and charging and discharging. In order to protect the battery's safety, mechanical performance and environmental adaptability, and to provide electrical insulation, management and protection functions, a battery encapsulation device is required.

[0003] A lithium battery packaging structure, patent publication number CN221978077U, is described in the prior art. This patent includes a packaging structure and a protective component. The packaging structure comprises a packaging box, a sealing cover, and a lithium battery. The surface of the lithium battery is in close contact with the interior of the packaging box. The four corners inside the sealing cover are fixedly connected to the four corners of the top of the packaging box by bolts. The protective component is located on the surface of the sealing cover and includes a first protective block, a second protective block, a top cover, and a bottom plate. The bottoms of the first and second protective blocks are slidably connected to and in close contact with the top of the bottom plate. The first and second protective blocks are both located inside the top cover… This device can seal and protect the lithium battery through the packaging structure and dissipate heat from the lithium battery through multiple heat dissipation holes. However, in practical use, it still has the following shortcomings: From a practical standpoint, the heat dissipation holes are always open, allowing dust, moisture, and corrosive gases in the air to easily enter the battery. These contaminants can damage the battery's electrolyte or other components, affecting the battery's performance and safety.

[0004] Therefore, an anti-expansion battery packaging device is needed to solve the problem in existing technologies where heat dissipation holes are always open, making it easy for external contaminants to enter the battery and cause damage. Utility Model Content

[0005] The purpose of this invention is to provide an anti-expansion battery packaging device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-expansion battery packaging device, comprising a packaging box, a cover detachably connected to the top of the packaging box, multiple fixing bolts rotatably connected to both sides of the packaging box, a baffle slidably connected inside the packaging box, two buffer mechanisms provided between the bottom of the baffle and the upper surface of the bottom of the packaging box, a mounting groove fixedly connected to the top of the baffle, a battery body installed on the inner wall of the mounting groove, multiple first elastic sheets fixedly connected to the inner walls of both sides of the packaging box, two second elastic sheets fixedly connected to the lower surface of the top of the cover, and multiple heat dissipation mechanisms provided on both sides of the packaging box.

[0007] It should be noted in the solution that multiple threaded grooves corresponding to the fixing bolts are opened on both sides of the packaging box near the top.

[0008] It is worth noting that the inner walls on both sides of the packaging box are provided with limiting grooves corresponding to the baffles.

[0009] Furthermore, it should be noted that the buffer mechanism includes two arc-shaped support frames fixedly connected to the upper surface of the bottom of the packaging box and two buffer seats fixedly connected to the bottom of the baffle. A round rod is fixedly connected between the two arc-shaped support frames. A sleeve is slidably connected to the outer wall of the round rod. A transverse damping spring is fixedly connected between the two sleeves. A first connecting ear is fixedly connected to the top of each of the two sleeves. A connecting rod is rotatably connected to the top of each of the two first connecting ears. A second connecting ear is rotatably connected to the top of each of the two connecting rods. A damping rod is installed on the inner wall of the bottom of each of the two buffer seats. A longitudinal damping spring is sleeved on the outer wall of each of the two damping rods.

[0010] In a preferred embodiment, the transverse damping spring is sleeved on the outer wall of the round rod, and the longitudinal damping spring is fixedly connected between the bottom of the buffer seat and the top of the arc-shaped support frame.

[0011] In a preferred embodiment, the heat dissipation mechanism includes a heat dissipation hole opened inside the packaging box, a support plate fixedly connected to the inner wall of the heat dissipation hole, a sliding column slidably connected to the inner wall of the support plate, a retaining ring fixedly connected to the inner side of the sliding column, a third spring sleeved on the outer wall of the sliding column, and a sealing plate fixedly connected to the outer side of the sliding column.

[0012] In a preferred embodiment, the third spring is fixedly connected between the outer side of the support plate and the inner side of the sealing plate.

[0013] In a preferred embodiment, the outer wall of the sealing plate is in contact with the inner wall of the heat dissipation hole.

[0014] Compared with the prior art, the anti-expansion battery packaging device provided by this utility model has at least the following beneficial effects:

[0015] (1) By setting up a heat dissipation mechanism, when the working temperature of the battery body increases, causing the internal temperature and pressure of the encapsulation box to increase, the sealing plate moves outward and separates from the heat dissipation hole to expose a gap, allowing air to circulate through the heat dissipation hole, releasing the internal temperature and pressure of the encapsulation box, helping to release excess heat and pressure, and preventing the encapsulation box from expanding or being damaged due to excessive pressure. After the pressure is released, the sealing plate returns to the inside of the heat dissipation hole through the reset action of the third spring, thereby blocking the heat dissipation hole, replacing the traditional heat dissipation hole that is always open. The sealing plate can automatically adjust according to the changes in internal temperature and pressure, maintaining the heat dissipation effect while effectively preventing the intrusion of external pollutants.

[0016] (2) By setting up a buffer mechanism, the transverse damping spring and the longitudinal damping spring work together to buffer the vibration of the encapsulation box under the action of the sleeve and the damping rod, thereby improving the reliability and stability of the battery body inside the encapsulation box and ensuring that the battery body can maintain a safe and stable state during long-term use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the box lid of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the packaging box of this utility model;

[0020] Figure 4 This is a schematic diagram of the buffer mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the heat dissipation mechanism of this utility model.

[0022] In the diagram: 1. Packaging box; 2. Box cover; 3. Fixing bolt; 4. Baffle; 5. Buffer mechanism; 501. Arc-shaped support frame; 502. Round rod; 503. Tube sleeve; 504. Lateral damping spring; 505. First connecting ear; 506. Connecting rod; 507. Second connecting ear; 508. Buffer seat; 509. Damping rod; 510. Longitudinal damping spring; 6. Mounting slot; 7. Battery body; 8. First elastic sheet; 9. Second elastic sheet; 10. Heat dissipation mechanism; 1001. Heat dissipation hole; 1002. Support plate; 1003. Sliding column; 1004. Retaining ring; 1005. Third spring; 1006. Sealing plate. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments.

[0024] Please see Figure 1-5This utility model provides an anti-expansion battery packaging device, including a packaging box 1, a cover 2 detachably connected to the top of the packaging box 1, multiple fixing bolts 3 rotatably connected to both sides of the packaging box 1, a baffle 4 slidably connected inside the packaging box 1, two buffer mechanisms 5 provided between the bottom of the baffle 4 and the bottom upper surface of the packaging box 1, a mounting groove 6 fixedly connected to the top of the baffle 4, a battery body 7 installed on the inner wall of the mounting groove 6, multiple first elastic sheets 8 fixedly connected to both inner walls of the packaging box 1, two second elastic sheets 9 fixedly connected to the top lower surface of the cover 2, and multiple heat dissipation mechanisms 10 provided on both sides of the packaging box 1.

[0025] Further as Figure 1 and Figure 2 As shown, it is worth noting that multiple threaded grooves corresponding to the fixing bolts 3 are provided on both sides of the encapsulation box 1 near the top. The cooperation between the threaded grooves and the fixing bolts 3 can ensure a tight connection between the top of the encapsulation box 1 and the box cover 2, improve the sealing performance, prevent external dust, moisture or other contaminants from entering the encapsulation box 1, and ensure the safety of the battery body 7. At the same time, the threaded groove design makes it easy to install and remove the fixing bolts 3, which is convenient for the maintenance and repair of the device.

[0026] Further as Figure 3 As shown, it is worth noting that the inner walls on both sides of the packaging box 1 are provided with limiting grooves corresponding to the baffle 4. The limiting grooves limit the baffle 4 and work in conjunction with the buffer mechanism 5 to achieve a shock absorption effect.

[0027] Further as Figure 4 As shown, it is worth noting that the buffer mechanism 5 includes two arc-shaped support frames 501 fixedly connected to the bottom upper surface of the packaging box 1 and two buffer seats 508 fixedly connected to the bottom of the baffle 4. A round rod 502 is fixedly connected between the two arc-shaped support frames 501. A tube sleeve 503 is slidably connected to the outer wall of the round rod 502. A transverse damping spring 504 is fixedly connected between the two tube sleeves 503. A first connecting ear 505 is fixedly connected to the top of each of the two tube sleeves 503. A connecting rod 506 is rotatably connected to the top of each of the two first connecting ears 505. A second connecting ear 507 is rotatably connected to the top of each of the two connecting rods 506. A damping rod 509 is installed on the inner wall of the bottom of each of the two buffer seats 508. A longitudinal damping spring 510 is sleeved on the outer wall of each of the two damping rods 509. By setting up the buffer mechanism 5, the vibration received by the packaging box 1 can be buffered, improving the reliability and stability of the battery body 7 inside the packaging box 1, and ensuring that the battery body 7 can maintain a safe and stable state during long-term use.

[0028] Further as Figure 4As shown, it is worth noting that the transverse damping spring 504 is sleeved on the outer wall of the round rod 502, and the longitudinal damping spring 510 is fixedly connected between the bottom of the buffer seat 508 and the top of the arc-shaped support frame 501. The damping rod 509 and the longitudinal damping spring 510 work together to further buffer the vibration impact on the packaging box 1, thereby improving the reliability and stability of the equipment.

[0029] As can be seen from the above working process, by setting the buffer mechanism 5, the vibration received by the packaging box 1 can be buffered, the reliability and stability of the battery body 7 inside the packaging box 1 can be improved, and the battery body 7 can maintain a safe and stable state during long-term use.

[0030] Further as Figure 5 As shown, it is worth noting that the heat dissipation mechanism 10 includes a heat dissipation hole 1001 inside the packaging box 1. A support plate 1002 is fixedly connected to the inner wall of the heat dissipation hole 1001. A sliding column 1003 is slidably connected to the inner wall of the support plate 1002. A retaining ring 1004 is fixedly connected to the inner side of the sliding column 1003. A third spring 1005 is sleeved on the outer wall of the sliding column 1003. A sealing plate 1006 is fixedly connected to the outer side of the sliding column 1003. By setting up the heat dissipation mechanism 10, the internal temperature and pressure of the packaging box 1 are released, which helps to release excess heat and pressure and avoids the packaging box 1 from expanding or being damaged due to excessive pressure. After the pressure is released, the sealing plate 1006 can automatically adjust according to the changes in internal temperature and pressure, maintaining the heat dissipation effect while effectively preventing the intrusion of external contaminants.

[0031] Further as Figure 5 As shown, it is worth noting that the third spring 1005 is fixedly connected between the outer side of the support plate 1002 and the inner side of the sealing plate 1006. Under the action of the third spring 1005, the sliding column 1003 can slide flexibly, thereby allowing the sealing plate 1006 to slide flexibly according to the actual pressure change.

[0032] Further as Figure 5 As shown, it is worth noting that the outer wall of the sealing plate 1006 is in close contact with the inner wall of the heat dissipation hole 1001. This tight fit can effectively prevent external substances such as air, dust, and moisture from entering the encapsulation box 1, thus avoiding these substances from negatively affecting the performance of the battery body 7 and enhancing the protective performance of the battery encapsulation.

[0033] This solution has the following working process: In actual use, the battery body 7 is installed on the inner wall of the mounting groove 6, and then the cover 2 is installed on the top of the encapsulation box 1 by fixing bolts 3, which encapsulates the battery body 7. The horizontal damping spring 504 and the vertical damping spring 510 cooperate with each other, and under the action of the sleeve 503 and the damping rod 509, they can buffer the vibration of the encapsulation box 1, so that the battery body 7 remains stable. When the working temperature of the battery body 7 increases, causing the internal temperature and pressure of the encapsulation box 1 to increase, the sealing plate 1006 moves outward. The sealing plate 1006 disengages from the heat dissipation hole 1001 to expose a gap, allowing air to circulate through the heat dissipation hole 1001, releasing the internal temperature and pressure of the encapsulation box 1, helping to release excess heat and pressure, and preventing the encapsulation box 1 from expanding or being damaged due to excessive pressure. After the pressure is released, the sealing plate 1006 returns to the heat dissipation hole 1001 through the reset action of the third spring 1005, thereby blocking the heat dissipation hole 1001.

[0034] In summary: By setting up the buffer mechanism 5, the vibrations received by the packaging box 1 can be buffered, improving the reliability and stability of the battery body 7 inside the packaging box 1, and ensuring that the battery body 7 can maintain a safe and stable state during long-term use; by setting up the heat dissipation mechanism 10, the internal temperature and pressure of the packaging box 1 can be released, helping to release excess heat and pressure, and preventing the packaging box 1 from expanding or being damaged due to excessive pressure. After the pressure is released, the sealing plate 1006 can automatically adjust according to the changes in internal temperature and pressure, maintaining heat dissipation while effectively preventing the intrusion of external contaminants.

Claims

1. A battery packaging device against swelling, comprising a packaging box (1), characterized in that: The top of the encapsulation box (1) is detachably connected to a cover (2). Both sides of the encapsulation box (1) are rotatably connected to multiple fixing bolts (3). The encapsulation box (1) is slidably connected to a baffle (4). Two buffer mechanisms (5) are provided between the bottom of the baffle (4) and the bottom upper surface of the encapsulation box (1). The top of the baffle (4) is fixedly connected to an installation groove (6). The inner wall of the installation groove (6) is fitted with a battery body (7). Both sides of the inner wall of the encapsulation box (1) are fixedly connected to multiple first elastic pieces (8). The bottom surface of the top of the cover (2) is fixedly connected to two second elastic pieces (9). Both sides of the encapsulation box (1) are provided with multiple heat dissipation mechanisms (10).

2. The anti-expansion battery packaging device according to claim 1, characterized in that: The packaging box (1) has multiple threaded grooves on both sides near the top, corresponding to the fixing bolts (3).

3. The anti-expansion battery packaging device according to claim 1, characterized in that: The inner walls on both sides of the packaging box (1) are provided with limiting grooves corresponding to the baffle (4).

4. The anti-expansion battery packaging device according to claim 1, characterized in that: The buffer mechanism (5) includes two arc-shaped support frames (501) fixedly connected to the bottom upper surface of the packaging box (1) and two buffer seats (508) fixedly connected to the bottom of the baffle (4). A round rod (502) is fixedly connected between the two arc-shaped support frames (501). A sleeve (503) is slidably connected to the outer wall of the round rod (502). A transverse damping spring (504) is fixedly connected between the two sleeves (503). A first connecting ear (505) is fixedly connected to the top of each of the two sleeves (503). A connecting rod (506) is rotatably connected to the top of each of the two first connecting ears (505). A second connecting ear (507) is rotatably connected to the top of each of the two connecting rods (506). A damping rod (509) is installed on the bottom inner wall of each of the two buffer seats (508). A longitudinal damping spring (510) is sleeved on the outer wall of each of the two damping rods (509).

5. The anti-expansion battery packaging device according to claim 4, characterized in that: The transverse damping spring (504) is sleeved on the outer wall of the round rod (502), and the longitudinal damping spring (510) is fixedly connected between the bottom of the buffer seat (508) and the top of the arc-shaped support frame (501).

6. The anti-expansion battery packaging device according to claim 1, characterized in that: The heat dissipation mechanism (10) includes a heat dissipation hole (1001) opened inside the packaging box (1). A support plate (1002) is fixedly connected to the inner wall of the heat dissipation hole (1001). A sliding column (1003) is slidably connected to the inner wall of the support plate (1002). A retaining ring (1004) is fixedly connected to the inner side of the sliding column (1003). A third spring (1005) is sleeved on the outer wall of the sliding column (1003). A sealing plate (1006) is fixedly connected to the outer side of the sliding column (1003).

7. The anti-expansion battery packaging device according to claim 6, characterized in that: The third spring (1005) is fixedly connected between the outer side of the support plate (1002) and the inner side of the sealing plate (1006).

8. The anti-expansion battery packaging device according to claim 6, characterized in that: The outer wall of the sealing plate (1006) is in contact with the inner wall of the heat dissipation hole (1001).

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