A fireproof and explosion-proof isolation compartment for lithium batteries

Abstract

This utility model discloses a fireproof and explosion-proof isolation chamber for lithium batteries, comprising: an outer shell, a sealing plate disposed inside the outer shell, and a plurality of fixing bolts disposed inside the sealing plate, the sealing plate being fixedly connected to the outer shell by the fixing bolts, a plurality of battery mounting frames disposed inside the sealing plate, and flame retardant filling the space between the outer shell and the sealing plate. This utility model mounts the lithium battery in the battery mounting frames and makes electrical connections, with the wiring extending laterally to the outside of the outer shell. The flame retardant not only cools the battery but also prevents it from catching fire. Simultaneously, the sealing plate prevents collisions between the battery mounting frames. In the event of an accidental fire, the sealing film melts rapidly, allowing fire extinguishing powder to cover the ignition point, thereby reducing damage.

Description

Technical Field

[0001] This utility model relates to the field of fireproof and explosion-proof technology for lithium batteries, and more specifically to a fireproof and explosion-proof isolation chamber for lithium batteries. Background Technology

[0002] Lithium-ion batteries are batteries that use lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Their working principle mainly relies on the reversible insertion and extraction of lithium ions between the positive and negative electrodes to achieve the storage and release of electrical energy. Depending on the positive electrode material, lithium-ion batteries can be divided into several types, including lithium cobalt oxide, lithium manganese oxide, lithium iron phosphate, and ternary lithium batteries. Among them, lithium cobalt oxide batteries have high energy density and good cycle performance, but are more expensive; lithium manganese oxide batteries have lower cost, but relatively weaker energy density and cycle performance; lithium iron phosphate batteries have a long cycle life and high safety, but lower energy density; ternary lithium batteries combine the advantages of the previous types, possessing high energy density and good cycle performance, and are currently the mainstream choice in the new energy vehicle field.

[0003] Existing technologies have the following problems:

[0004] 1. Lithium batteries have poorer safety performance compared to lead-acid batteries. If the vibration is too severe, it can easily cause the battery to short circuit.

[0005] 2. The existing cover plate installation structure is too simple and has poor explosion-proof performance.

[0006] Therefore, a new technical solution is needed to address this issue. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a fireproof and explosion-proof isolation chamber for lithium batteries, thereby solving the problems mentioned in the background section.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a fireproof and explosion-proof isolation chamber for lithium batteries, comprising: an outer shell, a sealing plate disposed inside the outer shell and a plurality of fixing bolts disposed inside the sealing plate, the sealing plate being fixedly connected to the outer shell by the fixing bolts, a plurality of battery mounting frames disposed inside the sealing plate, flame retardant filling the space between the outer shell and the sealing plate, a flame retardant coating disposed on the inner surface of the battery mounting frames and a plurality of filling grooves disposed inside the frames, fire extinguishing dry powder disposed inside the filling grooves, a sealing film disposed on the surface of the filling grooves and fixedly connected to the inner wall of the battery mounting frames, and a cover plate disposed on the upper part of the outer shell.

[0009] In a preferred embodiment of the present invention, a sealing valve is provided at the bottom of the outer shell, and the sealing valve is arranged in a cross-shaped structure.

[0010] In a preferred embodiment of the present invention, a sealing block is provided at the lower part of the cover plate and the sealing block is fitted into the interior of the outer shell.

[0011] In a preferred embodiment of the present invention, the cover plate has an installation groove inside, and a spring post is provided inside the installation groove. A pressure block is provided at the lower part of the spring post, and the pressure block corresponds to the battery mounting frame.

[0012] In a preferred embodiment of the present invention, the sealing block has a fixing hole inside and a locking bolt is provided on the side of the outer shell, and the locking bolt and the fixing hole correspond to each other.

[0013] In a preferred embodiment of this utility model, a fixing plate is provided on both sides of the outer shell and a through hole is provided inside the fixing plate. A connecting rod is provided on the upper part of the cover plate and a locking nut is provided at both ends of the connecting rod. The connecting rod passes through the fixing plate and is connected to the locking nut.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention features a sealing plate inside the outer casing, with several sets of fixing bolts inside the sealing plate. The sealing plate is fixedly connected to the outer casing via these bolts. Several battery mounting frames are located inside the sealing plate. A flame retardant is filled in the space between the outer casing and the sealing plate. A flame retardant coating is applied to the inner surface of each battery mounting frame, and several filling grooves are provided inside each groove. Fire extinguishing dry powder is placed inside each filling groove. A sealing film is applied to the surface of each filling groove and fixedly connected to the inner wall of the battery mounting frame. A lithium battery is installed in the battery mounting frame and electrically connected, with its wiring extending laterally to the outside of the outer casing. The flame retardant not only cools the battery but also prevents it from catching fire. The sealing plate prevents collisions between the battery mounting frames. In the event of an accidental fire, the sealing film melts rapidly, allowing the fire extinguishing dry powder to cover the ignition point, thus reducing damage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the cover plate structure of this utility model;

[0019] Figure 4 This is a top view of the outer shell structure of this utility model;

[0020] Figure 5This is a schematic diagram of the battery mounting frame structure of this utility model.

[0021] In the diagram: 1. Outer shell; 2. Cover plate; 3. Sealing block; 4. Fixing hole; 5. Connecting rod; 6. Locking nut; 7. Fixing plate; 8. Locking bolt; 9. Sealing valve; 10. Mounting groove; 11. Spring post; 12. Pressure block; 13. Sealing plate; 14. Battery mounting frame; 15. Fixing bolt; 16. Flame retardant coating; 17. Filling groove; 18. Fire extinguishing dry powder; 19. Sealing membrane. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-5 This utility model provides a technical solution: a fireproof and explosion-proof isolation chamber for lithium batteries.

[0024] Example 1

[0025] Regarding the aforementioned issues: lithium batteries have poorer safety performance compared to lead-acid batteries, and excessive vibration can easily cause short circuits.

[0026] The solution is as follows: A fireproof and explosion-proof isolation chamber for lithium batteries, comprising: an outer shell 1, wherein a sealing plate 13 is disposed inside the outer shell 1, and a plurality of fixing bolts 15 are disposed inside the sealing plate 13, the sealing plate 13 being fixedly connected to the outer shell 1 by the fixing bolts 15; a plurality of battery mounting frames 14 are disposed inside the sealing plate 13; a flame retardant is filled in the space between the outer shell 1 and the sealing plate 13; a flame retardant coating 16 is disposed on the inner surface of the battery mounting frames 14, and a plurality of filling grooves 17 are disposed inside the filling grooves 17; fire extinguishing dry powder 18 is disposed inside the filling grooves 17; a sealing film 19 is disposed on the surface of the filling grooves 17 and is fixedly connected to the inner wall of the battery mounting frames 14; a cover plate 2 is disposed on the upper part of the outer shell 1; a sealing plate 13 is disposed inside the outer shell 1, and a plurality of fixing bolts 15 are disposed inside the sealing plate 13; the sealing plate... The sealing plate 13 is fixedly connected to the outer casing 1 by fixing bolts 15. Several sets of battery mounting frames 14 are provided inside the sealing plate 13. Flame retardant is filled in the space between the outer casing 1 and the sealing plate 13. Flame retardant coating 16 is provided on the inner surface of the battery mounting frame 14 and several sets of filling grooves 17 are provided inside. Fire extinguishing dry powder 18 is provided inside the filling groove 17. A sealing film 19 is provided on the surface of the filling groove 17 and is fixedly connected to the inner wall of the battery mounting frame 14. The lithium battery is installed in the battery mounting frame 14 and electrically connected. Its wiring extends to the outside of the outer casing 1. The setting of flame retardant can not only play a role in cooling, but also prevent the battery from catching fire. At the same time, the setting of the sealing plate 13 prevents collisions between the battery mounting frames 14. When the lithium battery catches fire accidentally, its sealing film 19 melts quickly, allowing the fire extinguishing dry powder 18 to cover the ignition point, thereby reducing the loss.

[0027] Further improvements, such as Figure 2 As shown: The bottom of the outer shell 1 is provided with a sealing valve 9, and the sealing valve 9 is arranged in a cross shape, which can enhance the sealing of the bottom of the outer shell 1, prevent external moisture, dust and other impurities from entering the isolation chamber, and at the same time have a certain degree of air permeability.

[0028] Further improvements, such as Figure 1 As shown: The lower part of the cover plate 2 is provided with a sealing block 3, and the sealing block 3 is fitted into the interior of the outer shell 1. Through the fitting of the sealing block 3 into the interior of the outer shell 1, a tighter sealing structure can be formed, which can effectively prevent gas, liquid or impurities from entering the isolation chamber from the gap between the cover plate 2 and the outer shell 1.

[0029] Further improvements, such as Figure 3As shown: The cover plate 2 has an installation groove 10 inside and a spring post 11 inside the installation groove 10. A pressure block 12 is provided at the lower part of the spring post 11 and the pressure block 12 corresponds to the battery mounting frame 14. The arrangement of the spring post 11 and the pressure block 12 can provide additional pressure when the cover plate 2 is closed, ensuring tight contact between the battery and the battery mounting frame 14 and preventing loosening or falling off due to vibration or external force.

[0030] Example 2

[0031] Regarding the aforementioned problems: the existing cover plate 2 installation structure is too simple and has poor explosion-proof performance.

[0032] The solution is as follows: Figure 1 As shown: The sealing block 3 has a fixing hole 4 inside and a locking bolt 8 is provided on the side of the outer shell 1. The locking bolt 8 and the fixing hole 4 correspond to each other. Through the cooperation of the locking bolt 8 and the fixing hole 4, the cover plate 2 can be firmly locked to prevent the cover plate 2 from being opened or loosened accidentally.

[0033] Further improvements, such as Figure 1 As shown: Both sides of the outer casing 1 are provided with fixing plates 7, and the interior of the fixing plates 7 is provided with through holes. The upper part of the cover plate 2 is provided with a connecting rod 5, and both ends of the connecting rod 5 are provided with locking nuts 6. The connecting rod 5 passes through the fixing plates 7 and connects with the locking nuts 6. Through the cooperation of the connecting rod 5, the fixing plates 7, and the locking nuts 6, the connection strength between the cover plate 2 and the outer casing 1 can be further enhanced. Even under strong external forces, the stability of the isolation chamber structure can be ensured, improving the safety protection level of the lithium battery.

[0034] Working principle: This utility model has a sealing plate 13 inside the outer shell 1, and several sets of fixing bolts 15 are provided inside the sealing plate 13. The sealing plate 13 is fixedly connected to the outer shell 1 through the fixing bolts 15. Several sets of battery mounting frames 14 are provided inside the sealing plate 13. Flame retardant is filled in the space between the outer shell 1 and the sealing plate 13. A flame retardant coating 16 is provided on the inner surface of the battery mounting frame 14, and several sets of filling grooves 17 are provided inside. Fire extinguishing dry powder is placed inside the filling grooves 17. 18. A sealing film 19 is provided on the surface of the filling groove 17 and is fixedly connected to the inner wall of the battery mounting frame 14. The lithium battery is installed in the battery mounting frame 14 and electrically connected. Its wiring extends to the outside of the outer casing 1 on the side. The flame retardant not only plays a role in cooling but also prevents the battery from catching fire. At the same time, the sealing plate 13 prevents collisions between the battery mounting frame 14. When the lithium battery catches fire accidentally, its sealing film 19 melts quickly, allowing the fire extinguishing dry powder 18 to cover the ignition point, thereby reducing the loss.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model 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 basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc., are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0037] 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. A fire and explosion proof isolation compartment for lithium batteries, characterized in that: include: The outer shell (1) has a sealing plate (13) inside and a number of fixing bolts (15) inside the sealing plate (13). The sealing plate (13) is fixedly connected to the outer shell (1) through the fixing bolts (15). A number of battery mounting frames (14) are provided inside the sealing plate (13). The space between the outer shell (1) and the sealing plate (13) is filled with flame retardant. The inner surface of the battery mounting frame (14) is provided with a flame retardant coating (16) and a number of filling grooves (17) are provided inside. The filling grooves (17) are provided with fire extinguishing dry powder (18). The surface of the filling grooves (17) is provided with a sealing film (19) and is fixedly connected to the inner wall of the battery mounting frame (14). The upper part of the outer shell (1) is provided with a cover plate (2).

2. The fire and explosion prevention isolation chamber for lithium batteries according to claim 1, characterized in that: The bottom of the outer shell (1) is provided with a sealing valve (9) and the sealing valve (9) is arranged in a cross shape.

3. The fire and explosion prevention isolation chamber for lithium batteries according to claim 1, characterized in that: The lower part of the cover plate (2) is provided with a sealing block (3), and the sealing block (3) is fitted into the interior of the outer shell (1).

4. The fire and explosion prevention isolation chamber for lithium batteries according to claim 1, characterized in that: The cover plate (2) has an installation groove (10) inside and a spring column (11) inside the installation groove (10). A pressure block (12) is provided at the lower part of the spring column (11) and the pressure block (12) corresponds to the battery mounting frame (14).

5. The fire and explosion prevention isolation chamber for lithium batteries according to claim 3, characterized in that: The sealing block (3) has a fixing hole (4) inside and a locking bolt (8) is provided on the side of the outer shell (1). The locking bolt (8) and the fixing hole (4) correspond to each other.

6. The fire and explosion prevention isolation chamber for lithium batteries according to claim 1, characterized in that: The outer shell (1) is provided with a fixing plate (7) on both sides and the fixing plate (7) is provided with a through hole. The upper part of the cover plate (2) is provided with a connecting rod (5) and the two ends of the connecting rod (5) are provided with locking nuts (6). The connecting rod (5) passes through the fixing plate (7) and is connected to the locking nut (6).

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