Fire extinguishing device used in battery pack or battery pack production process

Abstract

The utility model relates to the technical field of fire extinguishing devices, in particular to a fire extinguishing device used in a battery pack or battery pack production process, which is used in a capacity grading and aging production process of a battery pack or a battery pack to be delivered. The fire extinguishing device comprises sensor equipment, a controller, a liftable rack, a lifting rod, a liftable fireproof shielding cover, a fire extinguishing material storage box, a liquid conveying pipe and a spraying head. The lifting rod is fixedly installed on the horizontal ground of a plant and connected with the lifting rack. The battery pack or the battery pack and the sensor equipment are placed on a horizontal table top of the lifting rack, and the controller is installed in a containing box below the horizontal table top of the lifting rack; the controller is in communication connection with the liftable rack, the sensor equipment, the liftable fireproof shielding cover and the spraying equipment; the spray header is connected with the fire extinguishing material storage box; the liftable fireproof shielding case is connected with the spraying device and is hung right above the liftable rack through the liftable chain. The fire extinguishing device is safer and more effective.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing devices, and in particular to a fire extinguishing device used in a battery pack or battery package production process. Background Art

[0002] With the rapid development of battery technology and its wide application in various fields, battery safety issues have become increasingly prominent, especially during battery pack capacity and aging testing. Thermal runaway caused by internal short circuits, overcharging, overheating and other factors is a serious safety hazard. When battery thermal runaway occurs, a large amount of heat generated in a short period of time will cause the electrolyte to vaporize violently and may cause an explosion. At the same time, high temperature will accelerate the chemical reaction inside the battery, further exacerbating the fire. At present, the battery aging test equipment on the market has incomplete prevention and control measures and devices for such sudden thermal runaway events, and lacks effective automatic fire extinguishing devices that can prevent the fire from spreading further.

[0003] In addition, during the aging test phase of electronic and electrical products, fires may also be triggered by potential quality problems of battery packs or battery packs or abnormal reactions under extreme working conditions. Traditional firefighting equipment uses fire extinguishing materials such as water and dry powder, which are limited in effectiveness when dealing with battery thermal runaway fires and may cause secondary hazards. For example, water may cause violent chemical reactions when it comes into contact with lithium-ion batteries, increasing the intensity of the fire.

[0004] Therefore, there is an urgent need to develop a safe fire-fighting device that can monitor the battery status in real time, accurately predict and quickly respond to thermal runaway accidents, and effectively suppress the source of fire and prevent the spread of fire. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a fire extinguishing device for use in the production process of a battery pack or battery package, which solves the technical problems that the existing devices cannot effectively prevent and quickly suppress fires caused by thermal runaway of batteries and cannot effectively prevent the further spread of fire.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the embodiment of the utility model proposes a fire extinguishing device for use in the production process of a battery pack or battery package, characterized in that the fire extinguishing device is used in the production process of the battery pack or battery package to be shipped during the capacity division and aging process, and the fire extinguishing device comprises:

[0009] Sensor equipment, controller, liftable platform 12, lift rod 13, liftable fire shield 1, fire extinguishing material storage box, liquid transport pipe 3 and sprinkler head 4;

[0010] The first end of the lifting rod 13 is fixedly mounted on the horizontal ground of the factory building, and the second end of the lifting rod 13 is connected to the liftable platform 12;

[0011] The battery pack 7 or battery package and the sensor device are placed on the horizontal surface of the liftable platform 12, and a storage box is provided below the horizontal surface of the liftable platform 12, and the controller is installed in the storage box;

[0012] The controller is in communication connection with the liftable platform 12, the sensor device, the liftable fire shield 1, the liquid transport pipe 3 and the sprinkler head 4;

[0013] The sprinkler head 4 is connected to the fire extinguishing material storage tank through the liquid transport pipe 3;

[0014] The liftable fire shield 1 is connected to the liquid transport pipe 3 and is hoisted directly above the liftable platform 12 through a liftable chain. The bottom end of the liftable fire shield 1 is lower than the bottom end of the sprinkler head 4, and the bottom end of the liftable fire shield 1 is at a specified distance from the surface of the liftable platform 12.

[0015] Optionally, the liftable fireproof shield 1 is in the shape of a square column and is provided with an opening at the bottom, the opening facing the liftable platform 12;

[0016] A circular hole 2 is provided on the top of the liftable fireproof shielding cover 1 , a liquid transport pipe 3 of the spraying equipment passes through the circular hole 2 and is connected to the liftable fireproof shielding cover 1 , and a spray head 4 of the spraying equipment is located inside the liftable fireproof shielding cover 1 .

[0017] Optionally, the shower head 4 is a conical structure;

[0018] The narrower end of the spray head 4 is connected to the liquid transport pipe 3, and the wider end of the spray head 4 is provided with a specified number of holes of specified sizes, and the sizes of the holes are all the same.

[0019] Optionally, the inner layer of the liquid transport pipe 3 is a silicone rubber layer or a fluororubber layer, and the inner layers of the fire extinguishing material storage box and the sprinkler head 4 are stainless steel layers or aluminum alloy layers.

[0020] Optionally, the fire extinguishing material in the fire extinguishing material storage tank is liquid nitrogen or liquid helium.

[0021] Optionally, the sensor device comprises:

[0022] Smoke sensor 8, temperature sensor 9, flame sensor 10, gas sensor 11;

[0023] The smoke sensor 8, the temperature sensor 9, the flame sensor 10 and the gas sensor 11 are evenly installed on the table of the liftable table 12 and at a position 1 cm away from the edge.

[0024] Optionally, the lifting rod 13 is an electric lifting rod or an electromagnetic lifting rod.

[0025] Optionally, the fire extinguishing device further includes an infrared thermal imager 5 and an image collector 6;

[0026] The infrared thermal imager 5 and the image collector 6 are used to collect information on the intensity of the fire and the specific location of the fire source.

[0027] Optionally, the infrared thermal imager 5 and the image collector 6 are both fixedly mounted on the wider end of the shower head 4 .

[0028] Optionally, the fire extinguishing device further comprises a pressure relief assembly;

[0029] The pressure relief component is arranged on the fire extinguishing material storage box, and the pressure relief component is communicatively connected with the controller, and is used to monitor the pressure in the fire extinguishing material storage box, and automatically opens or closes when the pressure in the fire extinguishing material storage box reaches a preset pressure threshold.

[0030] (III) Beneficial effects

[0031] The utility model is a fire extinguishing device used in the production process of battery packs or battery packages. Due to the use of sensor equipment to monitor the thermal runaway risk of battery packs or battery packages in the process of capacity division and aging in real time, combined with the coordinated action of the controller to accurately control the liftable platform, liftable fire shield and spray equipment, it can respond quickly in the early stage of the fire, and efficiently spray non-conductive fire extinguishing materials such as liquid nitrogen or liquid helium to the fire source through the spray head, effectively suppress the fire caused by thermal runaway of the battery, and prevent the fire from spreading to the surrounding environment through the design of the liftable fire shield. The device is not only safer and more effective, but also can more accurately deal with the fire point, reducing the adverse effects on the environment, equipment, factory buildings and other normal products during the fire extinguishing process;

[0032] The fire extinguishing device integrates multiple protection measures. The smoke sensor, temperature sensor, flame sensor and gas sensor are used to monitor the battery pack or battery pack status in all directions. The infrared thermal imager and image collector accurately determine the location of the fire source, realizing the rapid identification and location of the fire. In addition, the electric or electromagnetic lifting rod drives the lifting platform and fire shield, which can automatically adjust to the best fire extinguishing posture when a fire occurs, enhancing the fire extinguishing efficiency and safety.

[0033] In addition, the fire extinguishing material storage box is equipped with a pressure relief component, which can ensure that the pressure in the box is always within a safe range when the fire extinguishing material is quickly released, which not only ensures the effectiveness of fire extinguishing, but also avoids the potential safety hazards caused by excessive pressure;

[0034] Therefore, compared with the prior art, the fire extinguishing device provided by the utility model greatly improves the fire prevention and control capabilities in the battery production process, reduces the harm of thermal runaway accidents to production lines and personnel, and ensures the safety and reliability of the battery manufacturing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A schematic diagram of the disassembled structure of a fire extinguishing device used in a battery pack or battery package production process provided by an embodiment of the utility model;

[0036] Figure 2 A schematic diagram of the three-dimensional structure of a fire extinguishing device used in a battery pack or battery package production process provided by an embodiment of the utility model;

[0037] Figure 3 A cross-sectional view of a fire extinguishing device used in a battery pack or battery package production process provided by one embodiment of the utility model;

[0038] Figure 4a A front view of a fire extinguishing device used in a battery pack or battery package production process provided by an embodiment of the utility model, Figure 4b A top view of a fire extinguishing device used in a battery pack or battery package production process provided by an embodiment of the utility model, Figure 4c A bottom view of a fire extinguishing device used in a battery pack or battery package production process provided by one embodiment of the utility model.

[0039] [Description of Reference Numerals]

[0040] 1: liftable fire shield, 2: round hole, 3: liquid transport pipe, 4: sprinkler head,

[0041] 5: Infrared thermal imager, 6: Image collector, 7: Battery pack,

[0042] 8: Smoke sensor, 9: Temperature sensor, 10: Flame sensor, 11: Gas sensor,

[0043] 12: Liftable table, 13: Lifting rod. DETAILED DESCRIPTION

[0044] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0045] In order to solve the technical problems that the existing devices cannot effectively prevent and quickly suppress fires caused by thermal runaway of batteries and cannot effectively prevent the further spread of fires, the embodiment of the utility model proposes a fire extinguishing device for use in the production process of battery packs or battery packs, which uses sensor equipment to monitor the thermal runaway risks of battery packs or battery packs in the process of capacity division and aging in real time, and combines the coordinated actions of the controller to accurately control the liftable platform, liftable fire shield and spray equipment, so as to quickly respond to the early stage of the fire, and efficiently spray non-conductive fire extinguishing materials such as liquid nitrogen or liquid helium to the fire source through the spray head, effectively suppress the fire caused by thermal runaway of the battery, and prevent the fire from spreading to the surrounding environment through the design of the liftable fire shield. The device is not only safer and more effective, but also can more accurately deal with the fire point, reducing the adverse effects on the environment, equipment, factory buildings and other normal products during the fire extinguishing process;

[0046] The fire extinguishing device integrates multiple protection measures. The smoke sensor, temperature sensor, flame sensor and gas sensor are used to monitor the battery pack or battery pack status in all directions. The infrared thermal imager and image collector accurately determine the location of the fire source, realizing the rapid identification and location of the fire. In addition, the electric or electromagnetic lifting rod drives the lifting platform and fire shield, which can automatically adjust to the best fire extinguishing posture when a fire occurs, enhancing the fire extinguishing efficiency and safety.

[0047] In addition, the fire extinguishing material storage box is equipped with a pressure relief component, which can ensure that the pressure in the box is always within a safe range when the fire extinguishing material is released quickly, which not only ensures the effectiveness of fire extinguishing, but also avoids the safety hazards caused by excessive pressure.

[0048] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0049] Example

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 4a , Figure 4b and Figure 4c As shown, this embodiment provides a fire extinguishing device for use in a battery pack or battery pack production process. The fire extinguishing device is used in the production process of battery packs or battery packs to be shipped during capacity division and aging, and may include:

[0051] Sensor equipment, controller (not shown in the figure), liftable platform 12, lift rod 13, liftable fire shield 1, fire extinguishing material storage box (not shown in the figure), liquid transport pipe 3 and sprinkler head 4;

[0052] The first end of the lifting rod 13 is fixedly mounted on the horizontal ground of the factory building, and the second end of the lifting rod 13 is connected to the liftable platform 12;

[0053] The battery pack 7 or battery package and the sensor device are placed on the horizontal surface of the liftable platform 12, and a storage box is provided below the horizontal surface of the liftable platform 12, and the controller is installed in the storage box;

[0054] The controller is in communication connection with the liftable platform 12, the sensor device, the liftable fire shield 1 and the sprinkler device;

[0055] The sprinkler head 4 is connected to the fire extinguishing material storage tank through the liquid transport pipe 3;

[0056] The liftable fire shield 1 is connected to the liquid transport pipe 3 and is hoisted directly above the liftable platform 12 through a liftable chain. The bottom end of the liftable fire shield 1 is lower than the bottom end of the sprinkler head 4, and the bottom end of the liftable fire shield 1 is at a specified distance from the surface of the liftable platform 12.

[0057] Specifically, Figure 1 As shown, the liftable fireproof shield 1 is in the shape of a square column and is provided with an opening at the bottom, the opening facing the liftable platform 12;

[0058] The top of the liftable fireproof shield 1 is provided with a circular hole 2, such as Figure 3 As shown, the liquid transport pipe 3 of the spraying equipment passes through the circular hole 2 and is connected to the liftable fireproof shielding cover 1 , and the spray head 4 of the spraying equipment is located inside the liftable fireproof shielding cover 1 .

[0059] Alternatively, if Figure 3 As shown, the shower head 4 is a conical structure;

[0060] The narrower end of the spray head 4 is connected to the liquid transport pipe 3, and the wider end of the spray head 4 is provided with a specified number of holes of specified sizes, and the sizes of the holes are all the same.

[0061] Unlike traditional fire extinguishing devices that use water, dry powder and other media as fire extinguishing materials, liquid helium or liquid nitrogen is used as the fire extinguishing material in this embodiment. Liquid helium and liquid nitrogen can effectively reduce the temperature of the combustion material, that is, they can reduce the reaction intensity of thermal runaway, and provide favorable conditions for subsequent manual processing. They can also dilute the combustible and combustion-supporting gases generated by the combustion of the battery cells, and can also effectively isolate the external oxygen.

[0062] Preferably, the inner layer of the liquid transport pipe 3 is a silicone rubber layer or a fluororubber layer, and the inner layers of the fire extinguishing material storage box and the sprinkler head 4 are stainless steel layers or aluminum alloy layers.

[0063] Optionally, the sensor device comprises:

[0064] Smoke sensor 8, temperature sensor 9, flame sensor 10, gas sensor 11;

[0065] like Figure 1 As shown, the smoke sensor 8, the temperature sensor 9, the flame sensor 10 and the gas sensor 11 are evenly installed on the table of the liftable table 12 and at a position 1 cm away from the edge.

[0066] In this embodiment, the lifting rod 13 is an electric lifting rod or an electromagnetic lifting rod.

[0067] More preferably, the fire extinguishing device further includes an infrared thermal imager 5 and an image collector 6;

[0068] The infrared thermal imager 5 and the image collector 6 are used to collect the intensity information of the fire and the specific location information of the fire source;

[0069] like Figure 3 As shown, the infrared thermal imager 5 and the image collector 6 are both fixedly mounted on the wider end of the shower head 4 .

[0070] In this embodiment, the fire extinguishing device further includes a pressure relief assembly;

[0071] The pressure relief component is arranged on the fire extinguishing material storage box, and the pressure relief component is communicatively connected with the controller, and is used to monitor the pressure in the fire extinguishing material storage box, and automatically opens or closes when the pressure in the fire extinguishing material storage box reaches a preset pressure threshold.

[0072] In specific implementation, when the sensor device detects signs of thermal runaway in the battery pack 7 or battery pack, such as increased smoke concentration, a sharp rise in temperature, the appearance of flames, or abnormal concentrations of specific gases, the controller will immediately receive a warning signal and initiate corresponding emergency measures according to pre-set program instructions.

[0073] First, the controller will command the electric or electromagnetic lifting rod 13 to quickly drive the liftable platform 12 down, so that the battery pack 7 or battery package is further away from the potential fire source area. At the same time, the liftable fire shield 1 will be synchronously lowered under the action of the chain, surrounding the battery pack 7 or battery package to form a temporary isolation zone to prevent the fire from spreading to the surrounding environment.

[0074] Secondly, based on the real-time fire source location and fire intensity information provided by the infrared thermal imager 5 and the image collector 6, the controller will guide the sprinkler head 4 to accurately aim at the fire source location, and efficiently transport non-conductive, low-temperature fire extinguishing materials such as liquid helium or liquid nitrogen to the sprinkler head 4 through the liquid transport pipe 3. The materials are then quickly sprayed onto the fire source in an atomized state through the evenly distributed holes on the sprinkler head 4, thereby quickly reducing the temperature of the battery group 7 or battery pack and terminating the thermal runaway reaction.

[0075] In addition, the pressure inside the fire extinguishing material storage box is continuously monitored by the pressure relief component. Once the pressure reaches the preset threshold, the pressure relief component will automatically open to ensure that the release process of the fire extinguishing material is safe and smooth, and will not cause equipment damage or secondary disasters due to excessive pressure.

[0076] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0077] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0079] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0080] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A fire extinguishing device used in the production process of a battery pack or battery pack, It is characterized in that The fire extinguishing device is used in the production process of battery packs or battery packs to be shipped out of the factory during the capacity division and aging process. The fire extinguishing device includes: Sensor equipment, controller, liftable platform (12), lift rod (13), liftable fire shield (1), fire extinguishing material storage box, liquid transport pipe (3) and sprinkler head (4); The first end of the lifting rod (13) is fixedly mounted on the horizontal ground of the factory building, and the second end of the lifting rod (13) is connected to the liftable platform (12); The battery pack (7) or battery package and the sensor device are placed on a horizontal surface of a liftable platform (12), a storage box is provided below the horizontal surface of the liftable platform (12), and the controller is installed in the storage box; The controller is communicatively connected with the liftable platform (12), the sensor device, the liftable fire shield (1), the liquid transport pipe (3) and the sprinkler head (4); The sprinkler head (4) is connected to the fire extinguishing material storage tank via a liquid transport pipe (3); The liftable fireproof shielding cover (1) is connected to the liquid transport pipe (3) and is hoisted directly above the liftable platform (12) through a liftable chain. The bottom end of the liftable fireproof shielding cover (1) is lower than the bottom end of the sprinkler head (4), and the bottom end of the liftable fireproof shielding cover (1) is spaced a specified distance from the tabletop of the liftable platform (12).

2. The fire extinguishing device for use in a battery pack or battery pack production process according to claim 1, Features: The liftable fireproof shield (1) is in the shape of a square column and is provided with an opening at the bottom, the opening facing the liftable platform (12); A circular hole (2) is provided on the top of the liftable fireproof shielding cover (1); a liquid transport pipe (3) of a spraying device passes through the circular hole (2) and is connected to the liftable fireproof shielding cover (1); and a spray head (4) of the spraying device is located inside the liftable fireproof shielding cover (1).

3. The fire extinguishing device for use in a battery pack or battery pack production process according to claim 1, It is characterized in that The spray head (4) is a conical structure; The narrower end of the spray head (4) is connected to the liquid transport pipe (3), and the wider end of the spray head (4) is provided with holes of a specified number and size, and the holes are all of the same size.

4. The fire extinguishing device for use in a battery pack or battery pack production process according to claim 1, It is characterized in that The inner layer of the liquid transport pipe (3) is a silicone rubber layer or a fluororubber layer, and the inner layers of the fire extinguishing material storage box and the sprinkler head (4) are stainless steel layers or aluminum alloy layers.

5. The fire extinguishing device used in the battery pack or battery pack production process according to claim 4, It is characterized in that The fire extinguishing material in the fire extinguishing material storage box is liquid nitrogen or liquid helium.

6. The fire extinguishing device for use in a battery pack or battery pack production process according to claim 1, It is characterized in that The sensor device comprises: Smoke sensor (8), temperature sensor (9), flame sensor (10), gas sensor (11); The smoke sensor (8), the temperature sensor (9), the flame sensor (10) and the gas sensor (11) are evenly installed on the table top of the liftable table (12) at a position 1 cm away from the edge.

7. The fire extinguishing device for use in a battery pack or battery pack production process according to claim 1, It is characterized in that The lifting rod (13) is an electric lifting rod or an electromagnetic lifting rod.

8. The fire extinguishing device used in the production process of a battery pack or battery package according to claim 1, It is characterized in that The fire extinguishing device also includes an infrared thermal imager (5) and an image collector (6); The infrared thermal imager (5) and the image collector (6) are used to collect information on the intensity of the fire and the specific location of the fire source.

9. The fire extinguishing device for use in a battery pack or battery package production process according to claim 3 or 8, It is characterized in that The infrared thermal imager (5) and the image collector (6) are both fixedly mounted on the wider end of the shower head (4).

10. The fire extinguishing device used in the battery pack or battery pack production process according to claim 1, It is characterized in that The fire extinguishing device also includes a pressure relief assembly; The pressure relief component is arranged on the fire extinguishing material storage box, and the pressure relief component is communicatively connected with the controller, and is used to monitor the pressure in the fire extinguishing material storage box, and automatically opens or closes when the pressure in the fire extinguishing material storage box reaches a preset pressure threshold.

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