Explosion-proof device for household energy storage battery

Abstract

This utility model discloses an explosion-proof device for a household energy storage battery, including a protective box. One end of the protective box has a hinged door. Inside the protective box, a cooling fan with heat dissipation function is installed with screws. One end of the cooling fan is equipped with a return guide cylinder, a return pipe, and an outlet pipe. A warning light for personnel is installed on the top of the protective box. A movable column that moves as the temperature rises is also installed on the top of the protective box. Compared with the prior art, the beneficial effects of this utility model are that, during battery operation, the cooling fan dissipates heat from the battery. At this time, some air flows through the guide cylinder into the return pipe and then back to the outlet pipe before re-entering the protective box, accelerating the gas circulation inside the box and improving heat dissipation efficiency. During the return process, the cooling frame cools the return air, allowing the return air to further cool the battery. This dual action effectively reduces the battery temperature during use, preventing explosions caused by high temperatures.

Description

Technical Field

[0001] This utility model relates to the field of battery explosion-proof technology, specifically an explosion-proof device for household energy storage batteries. Background Technology

[0002] As the core component of the system, the household energy storage battery undertakes the key functions of storing and releasing electrical energy. However, there are significant safety hazards associated with the use of household energy storage batteries. The chemical characteristics of lithium-ion batteries mean that under abnormal operating conditions such as overcharging, over-discharging, short circuits, high-temperature environments, or physical impacts, they are prone to uncontrolled internal chemical reactions, generating a large amount of high-temperature gas, which can lead to battery bulging, rupture, or even explosion and fire. Therefore, it is necessary to use explosion-proof devices placed on the outside of the energy storage battery for protective treatment.

[0003] Existing heat dissipation solutions have significant limitations: traditional heat dissipation relies on a single fan blowing directly or natural heat dissipation, lacks airflow circulation design, has low heat dissipation efficiency, and cannot perform secondary cooling of the circulating airflow, making it difficult to effectively control the battery operating temperature. Although some devices have heat dissipation structures, they do not form a closed-loop airflow circuit, and heat is easily accumulated inside the enclosure, still posing a risk of explosion caused by high temperature, resulting in poor performance of explosion-proof devices. Utility Model Content

[0004] This invention provides an explosion-proof device for household energy storage batteries, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an explosion-proof device for a household energy storage battery, comprising a protective box, a door hinged to one end of the protective box, a heat dissipation fan installed inside the protective box by screws, a return guide tube, a return pipe and an exhaust pipe at one end of the heat dissipation fan, a warning light for personnel reminder on the top of the protective box, a movable column that can move as the temperature rises on the top of the protective box, and a switch for turning on the warning light on the top of the protective box.

[0006] Preferably, a guide tube is installed at one end of the cooling fan by screws, a return pipe is fixedly connected to one end of the guide tube, an air outlet pipe is fixedly connected to one end of the return pipe, one end of the air outlet pipe is fixedly connected to the other end of the protective box, and a heat dissipation frame is fixedly sleeved on the outside of the return pipe.

[0007] Preferably, the heat sink includes a heat sink cylinder and heat sink fins, the heat sink cylinder is fixedly sleeved on the outside of the return pipe, and heat sink fins are uniformly welded on the outside of the heat sink cylinder.

[0008] Preferably, the air outlet pipe includes a main pipe and branch pipes, with branch pipes evenly welded to one end of the main pipe, the main pipe being fixedly connected to the return pipe, and the branch pipes being fixedly connected to the end of the protective box.

[0009] Preferably, a high-temperature resistant airbag is bonded to one end of the top of the protective box, and a fixed cylinder is installed on the top of the protective box outside the high-temperature resistant airbag by screws. A movable plate is slidably connected inside the fixed cylinder, and a movable column is installed on the top of the movable plate by screws. A warning light is installed on the top of the fixed cylinder by screws, and a warning light is installed on the top of the protective box by screws.

[0010] Preferably, the movable column is located at the bottom of the switch, and the output terminal of the switch is electrically connected to the input terminal of the warning light.

[0011] Preferably, the movable plate is located at the top of the high-temperature resistant airbag, and the longitudinal section of the movable column is T-shaped.

[0012] Preferably, a corresponding hole is provided at one end of the door corresponding to the battery connection port, and a moving groove is provided inside the door, with a sealing plate slidably connected inside the moving groove.

[0013] Preferably, a movable rod is installed at one end of the sealing plate by screws, and the sealing plate corresponds to the position of the corresponding hole.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: The structure of this utility model is scientifically sound and reasonable, and it is safe and convenient to use. The protective box can form a closed space by closing the door and sealing the corresponding holes with a sealing plate, effectively preventing external impurities from entering and avoiding adverse effects on the battery. Simultaneously, placing the battery inside the protective box isolates it from direct impact with external objects, significantly reducing the risk of battery explosion due to impact, and providing a stable and safe storage environment for the battery. When the battery is working, a cooling fan can be used to dissipate heat from the battery. At this time, some of the airflow enters the return pipe through the guide tube and then flows back. The airflow re-enters the protective box through the exhaust duct, accelerating the air circulation within the box and improving heat dissipation efficiency. During the recirculation process, the heat dissipation rack cools the recirculated air, further cooling the battery. This dual action effectively reduces the battery's operating temperature, preventing explosions caused by high temperatures. When the battery temperature becomes too high, causing the internal pressure to rise, the high-temperature resistant airbag deforms and expands, pushing the moving plate and moving column until the moving column contacts the switch, activating the warning light. This promptly alerts personnel to take measures such as cutting off the power, mitigating the risk of battery explosion and providing dual protection for personnel safety and equipment. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] In the attached diagram: Figure 1This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the fixed cylinder installation structure of this utility model; Figure 3 This is a schematic diagram of the movable column installation structure of this utility model; Figure 4 This is a schematic diagram of the movable plate installation structure of this utility model; The following are labeled in the diagram: 1. Protective box; 2. Box door; 3. Cooling fan; 4. Guide tube; 5. Return pipe; 6. Heat dissipation frame; 7. Air outlet pipe; 8. High-temperature resistant airbag; 9. Fixed cylinder; 10. Moving plate; 11. Moving column; 12. Switch; 13. Warning light; 14. Corresponding hole; 15. Moving slot; 16. Enclosure plate. Detailed Implementation

[0017] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0018] Example: Figures 1-4 As shown, this utility model provides a technical solution: an explosion-proof device for a household energy storage battery, including a protective box 1. One end of the protective box 1 is hinged to a door 2, and the door 2 is connected to the protective box 1 by a latch. One end of the protective box 1 is fitted with a cooling fan 3 by screws, and one end of the cooling fan 3 is fitted with a guide cylinder 4 by screws. One end of the guide cylinder 4 is fixedly connected to a return pipe 5, and one end of the return pipe 5 is fixedly connected to an air outlet pipe 7. One end of the air outlet pipe 7 is fixedly connected to the other end of the protective box 1, and a heat dissipation frame 6 is fixedly sleeved on the outside of the return pipe 5.

[0019] The heat sink 6 includes a heat sink cylinder and heat sink fins. The heat sink cylinder is fixedly sleeved on the outside of the return pipe 5. Heat sink fins are uniformly welded on the outside of the heat sink cylinder, which facilitates the heat dissipation of the air inside the return pipe 5 and expands the contact range between the heat sink 6 and the air, thereby improving the heat dissipation effect inside the return pipe 5.

[0020] The air outlet duct 7 includes a main duct and branch ducts. Branch ducts are evenly welded to one end of the main duct. The main duct is fixedly connected to the return duct 5, and the branch ducts are fixedly connected to the end of the protective box 1. This allows air to be introduced into the protective box 1, accelerating the air circulation inside the protective box 1 and thus improving the cooling efficiency of the battery inside the protective box 1.

[0021] A high-temperature resistant airbag 8 is attached to one end of the top of the protective box 1. A fixed cylinder 9 is installed on the outside of the high-temperature resistant airbag 8 on the top of the protective box 1 by screws. A movable plate 10 is slidably connected inside the fixed cylinder 9. A movable column 11 is installed on the top of the movable plate 10 by screws. A warning light 13 is installed on the top of the fixed cylinder 9 by screws. A warning light 13 is installed on the top of the protective box 1 by screws.

[0022] The movable column 11 is located at the bottom of the switch 12. The output terminal of the switch 12 is electrically connected to the input terminal of the warning light 13, which facilitates the opening and closing of the warning light 13 and serves as a reminder to personnel.

[0023] The movable plate 10 is located on top of the high-temperature resistant airbag 8. The longitudinal section of the movable column 11 is T-shaped. The movable column 11 can be moved by the deformation of the high-temperature resistant airbag 8, thus avoiding the problem of the movable column 11 falling off.

[0024] A corresponding hole 14 is provided at one end of the door 2 corresponding to the battery connection port. A moving groove 15 is provided inside the door 2, and a sealing plate 16 is slidably connected inside the moving groove 15.

[0025] A movable rod is installed at one end of the sealing plate 16 by screws. The sealing plate 16 and the corresponding hole 14 are positioned to correspond to each other, which makes it easy for personnel to drive the sealing plate 16 to move, thereby opening and closing the corresponding hole 14.

[0026] Personnel place the battery inside the protective box 1 and close the box door 2. When the battery needs to be used, personnel open the corresponding hole 14 by moving the sealing plate 16 and connect the connecting wire to the battery. When using the battery, personnel turn on the cooling fan 3 to dissipate heat from the battery inside the protective box 1, reducing the battery temperature during use. During the heat dissipation process, some air enters the return pipe 5 through the guide tube 4, allowing the air to flow back into the air outlet pipe 7 and then re-enter the protective box 1, accelerating the gas flow inside the protective box 1, improving the cooling effect of the battery, and preventing the battery from exploding. Furthermore, during the return process, the cooling rack 6 further cools the air inside the return pipe 5, allowing the returned air to further cool the battery inside the protective box 1, improving the cooling effect.

[0027] During battery use, when the battery temperature is high, the internal air pressure of the protective box 1 increases. This increased air pressure causes the high-temperature resistant airbag 8 to deform and expand. The expansion of the high-temperature resistant airbag 8 pushes the moving plate 10 inside the fixed cylinder 9. The movement of the moving plate 10 pushes the moving column 11 to move. When the moving column 11 contacts the switch 12, the warning light 13 turns on to alert personnel. At this time, personnel can promptly cut off the power supply, which facilitates the warning to personnel when the battery is at high temperature and further reduces the risk of battery explosion.

[0028] When the battery is not in use, the corresponding hole 14 can be sealed by the sealing plate 16 to seal the protective box 1, preventing external impurities from entering the protective box 1 and affecting the battery inside the protective box 1. Moreover, the battery is protected inside the protective box 1, preventing the battery from being hit by external objects and causing the battery to explode.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An explosion-proof device for a household energy storage battery, comprising a protective box (1), wherein a door (2) is hinged to one end of the protective box (1), characterized in that: The protective box (1) has a heat dissipation fan (3) installed inside one end by screws. The heat dissipation fan (3) has a return guide cylinder (4), a return pipe (5) and an air outlet pipe (7) at one end. The protective box (1) has a warning light (13) on the top to remind personnel. The protective box (1) has a movable column (11) on the top that can move as the temperature rises. The protective box (1) has a switch (12) on the top to turn on the warning light (13).

2. The explosion-proof device for a household energy storage battery according to claim 1, characterized in that, One end of the cooling fan (3) is fitted with a guide tube (4) by screws. One end of the guide tube (4) is fixedly connected to a return pipe (5). One end of the return pipe (5) is fixedly connected to an air outlet pipe (7). One end of the air outlet pipe (7) is fixedly connected to the other end of the protective box (1). A heat sink bracket (6) is fixedly sleeved on the outside of the return pipe (5).

3. The explosion-proof device for a household energy storage battery according to claim 2, characterized in that, The heat sink (6) includes a heat sink cylinder and heat sink fins. The heat sink cylinder is fixedly sleeved on the outside of the return pipe (5), and heat sink fins are uniformly welded on the outside of the heat sink cylinder.

4. The explosion-proof device for a household energy storage battery according to claim 2, characterized in that, The air outlet pipe (7) includes a main pipe and branch pipes. Branch pipes are evenly welded to one end of the main pipe. The main pipe is fixedly connected to the return pipe (5), and the branch pipes are fixedly connected to the end of the protective box (1).

5. The explosion-proof device for a household energy storage battery according to claim 1, characterized in that, The protective box (1) has a high-temperature resistant airbag (8) attached to one end of its top. The top of the protective box (1) is located outside the high-temperature resistant airbag (8) and is fitted with a fixed cylinder (9) by screws. A movable plate (10) is slidably connected inside the fixed cylinder (9). A movable column (11) is fitted on the top of the movable plate (10) by screws. A warning light (13) is fitted on the top of the fixed cylinder (9) by screws. A warning light (13) is fitted on the top of the protective box (1) by screws.

6. The explosion-proof device for a household energy storage battery according to claim 5, characterized in that, The movable column (11) is located at the bottom of the switch (12), and the output end of the switch (12) is electrically connected to the input end of the warning light (13).

7. The explosion-proof device for a household energy storage battery according to claim 5, characterized in that, The movable plate (10) is located on top of the high-temperature resistant airbag (8), and the longitudinal section of the movable column (11) is T-shaped.

8. The explosion-proof device for a household energy storage battery according to claim 1, characterized in that, The door (2) has a corresponding hole (14) at one end corresponding to the battery connection port. The door (2) has a moving groove (15) inside, and a sealing plate (16) is slidably connected inside the moving groove (15).

9. The explosion-proof device for a household energy storage battery according to claim 8, characterized in that, One end of the sealing plate (16) is fitted with a movable rod by screws, and the sealing plate (16) and the corresponding hole (14) are positioned to correspond to each other.

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