A lithium-ion battery microcapsule fire extinguishing structure

Abstract

The utility model discloses a lithium ion battery microcapsule fire extinguishing structure, comprising a sealing cover, a storage box and a microcapsule shell, wherein the interior of the storage box is filled with multiple groups of microcapsule shells, multiple groups of detonating ports are provided on the outer side of the microcapsule shells, and the middle parts of the inner sides of the multiple groups of detonating ports are provided with easily broken layers, multiple groups of filter screens are provided on the outer side of the storage box, a material changing pipe is provided at the bottom of the storage box, a groove matched with the material changing pipe is provided at the middle part of the top of the sealing cover, a fixing seat is provided at the bottom of the sealing cover, and a magnet ring is provided at the edge of the bottom of the fixing seat; the utility model cooperates with each other among the easily broken layer, the detonating port and the microcapsule shell, and when the lithium electronic battery catches fire, the fire extinguishing agent in the microcapsule shell will be gasified and expanded by heat, and can enter the detonating port to easily break the easily broken layer to release the fire extinguishing agent, and misfire is not likely to occur, thereby improving the fire extinguishing effect on the lithium electronic battery.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium electronic battery fire extinguishing, in particular to a lithium ion battery microcapsule fire extinguishing structure. Background Art

[0002] Lithium-ion battery is a secondary battery that mainly relies on the movement of lithium ions between the positive and negative electrodes to work. When lithium-ion batteries are in use, excessive temperature and internal short circuit may cause fire. Therefore, in order to ensure the safe use of lithium-ion batteries, its fire extinguishing structure is very useful. Traditional fire extinguishers are large in size and are not suitable for use on lithium-ion batteries, so microcapsule fire extinguishing structures are needed to extinguish lithium-ion batteries.

[0003] The existing patent with the authorization announcement number "CN216963371U" discloses a microcapsule fire extinguishing device, including a box body and a block made of microcapsule fire extinguishing material, the block is arranged in the box body, the upper end of the box body is provided with a connecting assembly, and the lower end thereof is provided with a plurality of gaps at intervals. The utility model provides a microcapsule fire extinguishing device, which has a simple structure and can easily fix the microcapsule fire extinguishing agent in a closed space that requires fire protection, such as an electrical cabinet;

[0004] However, there are the following deficiencies in this device:

[0005] 1. At present, when microcapsules are used for fire extinguishing, due to the uniform thickness of the shell of the microcapsules, the microcapsules are not easy to burst and release the fire extinguishing agent, which reduces the fire extinguishing effect;

[0006] 2. After the above device is used for fire extinguishing, it is difficult to replace the microcapsules, so it can only be used once, the fire extinguishing cost is high, and the practicality is poor. Utility Model Content

[0007] The purpose of the utility model is to provide a lithium ion battery microcapsule fire extinguishing structure to solve the existing problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium-ion battery microcapsule fire extinguishing structure, comprising a sealing cover, a storage box and a microcapsule shell, the interior of the storage box is filled with multiple groups of microcapsule shells, the outer side of the microcapsule shell is provided with multiple groups of detonation ports, the middle part of the inner side of the multiple groups of detonation ports is provided with a breakable layer, the outer side of the storage box is provided with multiple groups of filter screens, the bottom of the storage box is provided with a material replacement pipe, the middle part of the top of the sealing cover is provided with a groove matching the material replacement pipe, the bottom of the sealing cover is provided with a fixing seat, the edge of the bottom of the fixing seat is provided with a magnet ring, and fixing components are provided on both sides of the inner side of the groove.

[0009] Preferably, the fixing assembly includes a slot, an insertion rod, a spring, a pull rope, a swivel and a guide groove, guide grooves are provided on both sides of the inner side of the groove, and two groups of insertion rods are slidably inserted into the inner sides of the guide grooves, slots matching the insertion rods are provided at the bottom of both sides of the material changing tube, a spring is provided on the side away from the two groups of insertion rods, a swivel is provided on the top of the outer side of the sealing cover, and pull ropes are provided on both sides of the inner side of the swivel, and the two groups of pull ropes pass through the inner side of the spring on the side close to each other and are respectively connected to the two groups of insertion rods, so as to facilitate the disassembly of the storage box and the sealing cover.

[0010] Preferably, an annular groove is provided at the edge of the bottom of the sealing cover, and sliding blocks matching the annular groove are provided on both sides of the top of the fixing seat, so that the fixing seat is rotatably connected to the sealing cover.

[0011] Preferably, the interior of the microcapsule shell is filled with perfluorohexanone fire extinguishing agent, which vaporizes and expands when heated to release the fire extinguishing agent.

[0012] Preferably, a clamping column adapted to the material changing tube is provided in the middle of the inner bottom of the groove, which can position the material changing tube and improve the fixing effect.

[0013] Preferably, the microcapsule shell is made of a flame-retardant polymer material, so that when the fire extinguishing agent in the microcapsule shell expands, the microcapsule shell can be detonated.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the lithium ion battery microcapsule fire extinguishing structure;

[0015] 1. Through the cooperation between the easily broken layer, the detonation port and the microcapsule shell, when the lithium-ion battery catches fire, the fire extinguishing agent in the microcapsule shell will be gasified and expanded by heat, and can enter the detonation port to easily break the easily broken layer and release the fire extinguishing agent, which is less likely to cause misfire and improves the fire extinguishing effect on lithium-ion batteries;

[0016] 2. Through the mutual cooperation among the slots, the plug rods, the springs, the pull ropes, the swivels and the guide grooves, the storage box and the sealing cover can be quickly removed after the device is used for fire extinguishing, and the microcapsule shell in the storage box can be replaced, so that the device can be used multiple times. Each time a fire is extinguished, only the microcapsule shell will be consumed, thus reducing the cost of fire extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 This is a front cross-sectional view of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the microcapsule shell of the utility model;

[0020] Figure 4For the utility model Figure 2 A schematic diagram of the enlarged structure of .

[0021] In the figure: 1. Sealing cover; 2. Fixing seat; 3. Groove; 4. Material changing pipe; 5. Storage box; 6. Filter screen; 7. Magnet ring; 8. Slot; 9. Insert rod; 10. Spring; 11. Pull rope; 12. Rotating ring; 13. Guide groove; 14. Breakable layer; 15. Detonation port; 16. Microcapsule shell. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides an embodiment: a lithium-ion battery microcapsule fire extinguishing structure, comprising a sealing cover 1, a storage box 5 and a microcapsule shell 16, wherein the storage box 5 is filled with multiple groups of microcapsule shells 16, wherein the microcapsule shells 16 are filled with perfluorohexanone fire extinguishing agent, which will vaporize and expand when heated to release the fire extinguishing agent, and the microcapsule shells 16 are made of a flame retardant polymer material, so that when the fire extinguishing agent in the microcapsule shells 16 expands, the microcapsule shells 16 can be detonated, and multiple groups of detonation ports 15 are provided on the outer side of the microcapsule shells 16, and multiple groups of A breakable layer 14 is provided in the middle of the inner side of the detonation port 15, multiple groups of filter screens 6 are provided on the outer side of the storage box 5, a material changing pipe 4 is provided at the bottom of the storage box 5, a groove 3 matching the material changing pipe 4 is provided in the middle of the top of the sealing cover 1, and a clamping column matching the material changing pipe 4 is provided in the middle of the bottom of the inner side of the groove 3, which can position the material changing pipe 4 and improve the fixing effect, a fixing seat 2 is provided at the bottom of the sealing cover 1, a magnet ring 7 is provided at the edge of the bottom of the fixing seat 2, and fixing components are provided on both sides of the inner side of the groove 3.

[0024] Furthermore, the fixing assembly includes a slot 8, an insertion rod 9, a spring 10, a pull rope 11, a swivel 12 and a guide groove 13. Guide grooves 13 are provided on both sides of the inner side of the groove 3, and the insertion rods 9 are slidably inserted into the inner sides of the two groups of guide grooves 13. Slots 8 matching the insertion rods 9 are provided at the bottom of both sides of the material replacement tube 4. A spring 10 is provided on the side where the two groups of insertion rods 9 are away from each other. A swivel 12 is provided on the top of the outer side of the sealing cover 1, and pull ropes 11 are provided on both sides of the inner side of the swivel 12. The two groups of pull ropes 11 pass through the inner side of the spring 10 on the side where they are close to each other and are respectively connected to the two groups of insertion rods 9. The storage box 5 can be quickly removed to replace the microcapsule shell 16, so that the device can be used repeatedly.

[0025] Furthermore, an annular groove is provided at the edge of the bottom of the sealing cover 1, and sliding blocks matching the annular groove are provided on both sides of the top of the fixing seat 2, so that when the device is used for fire extinguishing, the storage box 5 can be shaken and rotated due to the force of detonating the microcapsule shell 16, and the microcapsule shell 16 in the storage box 5 can be fully detonated.

[0026] Working principle: When the device is in use, the magnetic force of the magnet ring 7 can be used to adsorb the device into the outer shell of the lithium-ion battery. When the lithium-ion battery catches fire, the fire extinguishing agent in the microcapsule shell 16 will be heated and gasified and expanded, and the easily breakable layer 14 can be easily broken from the detonation port 15 to release the fire extinguishing agent. Then the fire extinguishing agent can be released from the filter screen 6 to extinguish the fire of the lithium-ion battery.

[0027] After the device is used for fire extinguishing, the device can be removed and the pull rope 11 can be driven by rotating the swivel 12 so that the two sets of rods 9 can overcome the elastic force of the spring 10 and be pulled out from the slot 8, thereby releasing the fixation of the material change tube 4. At this time, the interface removes the storage box 5 and the sealing cover 1, and the microcapsule shell 16 in the storage box 5 can be replaced. After the replacement is completed, the material change tube 4 is inserted into the outer side of the card column so that the material change tube 4 is inserted into the groove 3. The two sets of rods 9 can be automatically inserted into the slot 8 under the elastic force of the spring 10 to fix the material change tube 4, which is convenient for reuse.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0029] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A lithium-ion battery microcapsule fire extinguishing structure, comprising a sealing cover (1), a storage box (5) and a microcapsule shell (16), characterized in that: The interior of the storage box (5) is filled with a plurality of groups of microcapsule shells (16), the outer side of the microcapsule shells (16) is provided with a plurality of groups of detonation ports (15), the middle of the inner side of the plurality of groups of detonation ports (15) is provided with a breakable layer (14), the outer side of the storage box (5) is provided with a plurality of groups of filter screens (6), the bottom of the storage box (5) is provided with a material changing pipe (4), the middle of the top of the sealing cover (1) is provided with a groove (3) matching with the material changing pipe (4), the bottom of the sealing cover (1) is provided with a fixing seat (2), the edge of the bottom of the fixing seat (2) is provided with a magnet ring (7), and fixing components are provided on both sides of the inner side of the groove (3).

2. A lithium-ion battery microcapsule fire extinguishing structure according to claim 1, characterized in that: The fixing assembly comprises a slot (8), an insertion rod (9), a spring (10), a pull rope (11), a swivel (12) and a guide groove (13). The guide grooves (13) are provided on both sides of the inner side of the groove (3). The inner sides of the two groups of guide grooves (13) are slidably plugged with insertion rods (9). The bottoms of both sides of the material changing tube (4) are provided with slots (8) matching with the insertion rods (9). The two groups of insertion rods (9) are provided with springs (10) on the side away from each other. The top of the outer side of the sealing cover (1) is provided with a swivel (12). The two sides of the inner side of the swivel (12) are provided with pull ropes (11). The two groups of pull ropes (11) pass through the inner side of the spring (10) on the side close to each other and are respectively connected to the two groups of insertion rods (9).

3. A lithium-ion battery microcapsule fire extinguishing structure according to claim 1, characterized in that: An annular sliding groove is provided at the edge of the bottom of the sealing cover (1), and sliding blocks matching the annular sliding groove are provided on both sides of the top of the fixing seat (2).

4. A lithium-ion battery microcapsule fire extinguishing structure according to claim 1, characterized in that: The interior of the microcapsule shell (16) is filled with perfluorohexanone fire extinguishing agent.

5. A lithium-ion battery microcapsule fire extinguishing structure according to claim 1, characterized in that: A clamping column adapted to the material changing pipe (4) is arranged in the middle of the inner bottom of the groove (3).

6. A lithium-ion battery microcapsule fire extinguishing structure according to claim 1, characterized in that: The microcapsule shell (16) is made of a flame-retardant polymer material.

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