A lithium battery thermal runaway early warning device

Abstract

The utility model discloses a lithium battery thermal runaway early warning device, and its technical scheme main points are: including detection box, the inside of detection box is provided with and places the box, the inside fixed mounting of placing box has the partition frame, both sides of partition frame all fixed mounting have two placing frame, both sides of partition frame all fixed mounting have a plurality of warning light, through setting the placing box, can place lithium battery in the inside of placing box, centralizedly carries out test detection, through the design of partition frame and placing frame, can divide the inside of placing box into six areas, provide the convenience for the distinction of abnormal battery, through the design of warning light, can access several warning lights respectively different detection circuit, and the warning light will synchronously light up when corresponding detection circuit detects the anomaly, and then the position of abnormal battery is found more quickly, guarantees that the staff can handle the abnormal battery after finding the anomaly, avoids causing the major security risk.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically to an early warning device for thermal runaway in lithium batteries. Background Technology

[0002] With increasing public attention to new energy sources, lithium batteries have become the mainstream choice for new energy carriers due to their advantages such as high capacity, high output voltage, high charging rate, high energy density, and excellent cycle characteristics. However, thermal runaway poses a threat throughout the entire battery lifecycle, including manufacturing, transportation, storage, application, disposal, and recycling. In essence, thermal runaway in lithium batteries is caused by violent side reactions of internal substances, generating numerous flammable and toxic gases. Therefore, monitoring these gases can provide timely warnings of thermal runaway.

[0003] Existing lithium battery thermal runaway early warning devices on the market generally make early judgments and provide warnings by detecting the electrolyte generated in the early stages of battery thermal runaway, so as to intervene as early as possible to avoid entering an uncontrollable state. However, in actual use, when multiple batteries are tested, it is only possible to determine whether they are out of control through key gas detection, but it is not possible to determine the location of the out-of-control battery. Therefore, we propose a lithium battery thermal runaway early warning device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an early warning device for thermal runaway of lithium batteries, which solves the problem that in practical use, when multiple batteries are being tested, it is only possible to determine whether they are out of control through key gas detection, but not to determine the location of the out-of-control battery.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] An early warning device for thermal runaway of a lithium battery includes a detection box, inside which is a placement box. Inside the placement box, a partition frame is fixedly installed. Two placement frames are fixedly installed on each side of the partition frame, and several warning lights are fixedly installed on each side of the partition frame.

[0007] Preferably, the top surfaces of the detection box, the placement box, and the partition frame are all provided with a first through hole, and the two sides of the partition frame are provided with a plurality of second through holes. The first through hole and the second through hole are connected. A first connecting wire is sleeved inside the first through hole. The first connecting wire consists of a main line and a plurality of branch lines. The branch lines of the first connecting wire extend out of the partition frame through the second through holes. A Pack-level sensor is fixedly installed at one end of the branch lines of the first connecting wire.

[0008] Preferably, both the partition frame and the placement frame are fixedly installed with a heat insulation layer, which is made of aerogel material.

[0009] Preferably, the top and bottom surfaces of the testing box are provided with sliding grooves, and a cover is provided inside the testing box. Sliding blocks are fixedly installed on the top and bottom surfaces of the cover, and the cover is engaged with the inside of the testing box through the sliding grooves and the sliding blocks.

[0010] Preferably, a gas sensor is fixedly installed on one side of the inside of the detection box, and a third through hole is provided on the outer wall of the detection box, through which the wiring part of the gas sensor extends out of the detection box.

[0011] Preferably, a stabilizing clamp is fixedly installed on one side of the testing box, and a fire extinguishing device is snapped into the inside of the stabilizing clamp. Two snap-fit ​​slots are opened inside the testing box, and two snap-fit ​​blocks are fixedly installed on the bottom surface inside the placement box. The placement box is snapped into the inside of the testing box through the snap-fit ​​slots and the snap-fit ​​blocks.

[0012] The design of the fire extinguishing equipment allows staff to quickly retrieve and handle abnormal batteries when an anomaly is detected, enabling timely intervention in the early stages of anomalies and preventing safety accidents.

[0013] In summary, the present invention has the following main advantages:

[0014] 1. By setting up a placement box, lithium batteries can be placed inside for centralized testing to ensure their safety. The design of the partition frame and placement frame divides the interior of the placement box into six areas, facilitating the identification of abnormal batteries. The design of the warning lights allows several warning lights to be connected to different detection circuits. When the corresponding detection circuit detects an abnormality, the warning lights will light up simultaneously, making it easier to quickly locate the abnormal battery and ensuring that staff can quickly handle the abnormal battery after discovering the abnormality to avoid causing major safety hazards.

[0015] 2. By setting up a heat insulation layer, on the one hand, the stability of the partition frame and the placement frame can be increased, ensuring that the partition frame and the placement frame can properly support the lithium battery. On the other hand, it can effectively insulate heat and prevent the heat of abnormal battery from being transferred to other batteries, which would damage other batteries placed inside the placement box. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

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

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

[0019] Figure 4 This is a schematic diagram of the separator frame structure of this utility model.

[0020] Reference numerals: 1. Detection box; 2. Placement box; 3. Divider frame; 4. Placement frame; 5. Warning light; 6. First through hole; 7. Second through hole; 8. First connecting wire; 9. Pack-level sensor; 10. Insulation layer; 11. Slide groove; 12. Cover; 13. Sliding block; 14. Gas sensor; 15. Third through hole; 16. Stabilizing clamp; 17. Fire extinguishing equipment; 18. Snap-fit ​​groove; 19. Snap-fit ​​block. Detailed Implementation

[0021] 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.

[0022] refer to Figures 1-4 An early warning device for thermal runaway of lithium batteries includes a detection box 1, inside which is a placement box 2. The placement box 2 is designed to hold lithium batteries for centralized testing to ensure their safety. A partition frame 3 is fixedly installed inside the placement box 2, and two placement boxes 4 are fixedly installed on both sides of the partition frame 3. The partition frame 3 and the placement boxes 4 divide the interior of the placement box 2 into six areas, facilitating the identification of abnormal batteries. Several warning lights 5 are fixedly installed on both sides of the partition frame 3. The warning lights 5 are designed to be connected to different detection circuits. When the corresponding detection circuit detects an abnormality, the warning lights 5 will light up simultaneously, making it easier to quickly locate the abnormal battery and ensuring that staff can quickly handle the abnormal battery after discovering it, thus avoiding major safety hazards.

[0023] The top surfaces of the detection box 1, the placement box 2, and the partition frame 3 are all provided with a first through hole 6. Several second through holes 7 are provided on both sides of the partition frame 3. The first through holes 6 and the second through holes 7 are connected. A first connecting line 8 is sleeved inside the first through hole 6. The first connecting line 8 consists of a main line and several branch lines. The branch lines of the first connecting line 8 extend out of the partition frame 3 through the second through holes 7. A Pack-level sensor 9 is fixedly installed at one end of the branch line of the first connecting line 8. Through the design of the Pack-level sensor 9, the Pack-level sensor 9 is a structure that is already available on the market. Compared with ordinary sensors, it can detect gas and temperature at the same time. It can predict abnormal situations at an earlier stage and provide staff with sufficient time to deal with them.

[0024] Both the partition frame 3 and the placement frame 4 are fixedly installed with a heat insulation layer 10. The heat insulation layer 10 is made of aerogel. Through the design of the heat insulation layer 10, on the one hand, the stability of the partition frame 3 and the placement frame 4 can be increased, ensuring that the partition frame 3 and the placement frame 4 can normally support the lithium battery. On the other hand, it can effectively insulate heat and prevent the heat of the abnormal battery from being transferred to other batteries, which would damage other batteries placed inside the placement box 2.

[0025] The top and bottom surfaces of the test box 1 are provided with sliding grooves 11. The test box 1 is provided with a shielding cover 12. The top and bottom surfaces of the shielding cover 12 are fixedly installed with sliding blocks 13. The shielding cover 12 is engaged with the inside of the test box 1 through the sliding grooves 11 and the sliding blocks 13. The design of the sliding blocks 13 can shield the inside of the test box 1, avoiding the possibility that the lithium battery may be directly exposed to the air when placed inside, which may cause dust to accumulate on the outer wall and affect the normal heat dissipation of the battery.

[0026] A gas sensor 14 is fixedly installed on one side of the inside of the detection box 1. The gas sensor 14 is a structure that is already available on the market. The gas sensor 14 can detect abnormal gas inside the detection box 1 and assist the Pack-level sensor 9 in performing a second detection, which further increases the safety of the device. A third through hole 15 is opened on the outer wall of the detection box 1, and the wiring part of the gas sensor 14 extends out of the detection box 1 through the third through hole 15.

[0027] A stabilizing clamp 16 is fixedly installed on one side of the testing box 1. A fire extinguishing device 17 is snapped into the inside of the stabilizing clamp 16. The design of the fire extinguishing device 17 allows staff to quickly retrieve and handle the abnormal battery when an anomaly is detected, enabling timely intervention in the battery in the early stages of an anomaly and preventing safety accidents. Two snap-fit ​​slots 18 are opened inside the testing box 1. Two snap-fit ​​blocks 19 are fixedly installed on the bottom surface of the inside of the placement box 2. The placement box 2 is snapped into the inside of the testing box 1 through the snap-fit ​​slots 18 and the snap-fit ​​blocks 19.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium battery thermal runaway early warning device, comprising a detection box (1), characterized in that, The detection box (1) is equipped with a placement box (2) inside. A partition frame (3) is fixedly installed inside the placement box (2). Two placement frames (4) are fixedly installed on both sides of the partition frame (3). Several warning lights (5) are fixedly installed on both sides of the partition frame (3).

2. The lithium battery thermal runaway early warning device according to claim 1, characterized in that, The top surfaces of the detection box (1), the placement box (2), and the partition frame (3) are all provided with a first through hole (6). Several second through holes (7) are provided on both sides of the partition frame (3). The first through hole (6) and the second through hole (7) are connected. A first connecting line (8) is sleeved inside the first through hole (6). The first connecting line (8) consists of a main line and several branch lines. The branch lines of the first connecting line (8) extend out of the partition frame (3) through the second through hole (7). A Pack-level sensor (9) is fixedly installed at one end of the branch lines of the first connecting line (8).

3. The lithium battery thermal runaway early warning device according to claim 1, characterized in that, Both the partition frame (3) and the placement frame (4) are fixedly installed with a heat insulation layer (10), which is made of aerogel material.

4. The lithium battery thermal runaway early warning device according to claim 1, characterized in that, The top and bottom surfaces of the test box (1) are provided with sliding grooves (11), and a cover (12) is provided inside the test box (1). Sliding blocks (13) are fixedly installed on the top and bottom surfaces of the cover (12). The cover (12) is engaged with the inside of the test box (1) through the sliding grooves (11) and the sliding blocks (13).

5. The lithium battery thermal runaway early warning device according to claim 1, characterized in that, A gas sensor (14) is fixedly installed on one side of the inside of the detection box (1). A third through hole (15) is opened on the outer wall of the detection box (1). The wiring part of the gas sensor (14) extends out of the detection box (1) through the third through hole (15).

6. The lithium battery thermal runaway early warning device according to claim 1, characterized in that, A stabilizing clamp (16) is fixedly installed on one side of the testing box (1). A fire extinguishing device (17) is snapped into the inside of the stabilizing clamp (16). Two snap-fit ​​slots (18) are opened inside the testing box (1). Two snap-fit ​​blocks (19) are fixedly installed on the bottom surface inside the placement box (2). The placement box (2) is snapped into the inside of the testing box (1) through the snap-fit ​​slots (18) and the snap-fit ​​blocks (19).

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