Battery pack with built-in fire suppression module

Abstract

This application provides a battery pack with a built-in fire-fighting module, belonging to the field of new energy battery technology. This application features a fire-fighting module within the battery casing, comprising a fire-fighting bracket and a fire-extinguishing module. The fire-fighting bracket is positioned between the upper cover and the battery module, with a gap between them. The fire-extinguishing module is fixed to the fire-fighting bracket. When the battery module is subjected to abnormalities such as impact, compression, overcharging, or over-discharging, it generates a large amount of heat. As this heat accumulates within the battery pack, the internal temperature rises, potentially causing the battery pack to ignite due to high temperature. When the fire-extinguishing module detects abnormal heat, it activates to extinguish the fire, preventing the fire from spreading and causing significant damage to property and lives if not dealt with promptly.

Description

Technical Field

[0001] This utility model belongs to the field of new energy battery technology, specifically relating to a battery pack with a built-in fire protection module. Background Technology

[0002] In existing technologies, new energy batteries mainly consist of battery modules, battery casings, top covers, and related accessories. The top cover is placed on top of the battery casing, and the battery modules are housed inside the casing. If the battery module experiences abnormalities such as collisions, compression, overcharging, or over-discharging, it may generate a large amount of heat. As this heat accumulates inside the battery casing, the internal temperature rises continuously, potentially causing the battery module to burn due to high temperatures. If not handled promptly and correctly, this could result in significant losses to people's property and lives. Utility Model Content

[0003] This utility model provides a battery pack with a built-in fire-fighting module, which aims to solve the technical problem that the battery pack cannot be blocked immediately when it catches fire in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a battery pack with a built-in fire-fighting module, which includes not only a battery casing, a battery module, and a top cover, but also a receiving cavity for accommodating the battery module, and the top cover fixed to the battery casing; the battery pack with the built-in fire-fighting module further includes a fire-fighting module. The fire-fighting module is disposed within the receiving cavity, and the fire-fighting module includes:

[0005] A fire-fighting bracket is disposed between the upper cover plate and the battery module. The fire-fighting bracket is connected to the battery casing, and a gap is provided between the fire-fighting bracket and the battery module.

[0006] A fire extinguishing module is installed on the fire-fighting support, and the fire extinguishing module is used to extinguish fires on the battery module.

[0007] In one possible implementation, the fire-fighting support includes:

[0008] A substrate is horizontally arranged, and the substrate is provided with multiple weight-reduction holes;

[0009] Four legs are provided, and the four legs are respectively located at the four corners of the bottom of the substrate.

[0010] In one possible implementation, the outrigger includes:

[0011] A first support member is vertically disposed at the bottom of the substrate, and one end of the first support member is fixedly connected to the bottom of the substrate.

[0012] The second support member has one end fixedly connected to the bottom of the substrate. The side wall of the first support member is connected to the second support member. The second support member includes a horizontal support part and a vertical support part. The horizontal support part is horizontally fixed to the bottom of the vertical support part, and the horizontal support part is provided with mounting holes.

[0013] In one possible implementation, the first support member and the vertical support portion form a T-shaped structure.

[0014] In one possible implementation, the vertical support is a Z-shaped structure.

[0015] In one possible implementation, the mounting hole is an oblong shape.

[0016] In one possible implementation, the fire extinguishing module includes:

[0017] A thermal aerosol fire extinguishing assembly is mounted on the fire-fighting support and is used for fire extinguishing.

[0018] A temperature sensor is connected to the fire-fighting bracket, and the temperature sensor is located below the fire-fighting bracket, with a gap between it and the upper surface of the battery module; the temperature sensor is fixedly connected to the thermal aerosol fire extinguishing assembly.

[0019] In one possible implementation, the thermal aerosol fire extinguishing assembly includes a housing and a thermal aerosol generator:

[0020] The outer casing has spray holes located on the side of the outer casing facing the battery module; the thermal aerosol generator is located inside the outer casing and is used to generate aerosol through a reaction.

[0021] The aerosol is sprayed from the nozzle to extinguish the fire.

[0022] In one possible implementation, the battery casing is further provided with four mounting posts, which are vertically arranged at the four corners of the receiving cavity and have bolt holes at the top. The four mounting posts are arranged in a one-to-one correspondence with the four legs, and the bolt holes are arranged in a one-to-one correspondence with the mounting holes.

[0023] The mounting column and the support leg are connected by bolts.

[0024] In one possible implementation, the fire extinguishing module is connected to the fire-fighting bracket by bolts.

[0025] Compared with the prior art, the solution shown in this application embodiment incorporates a fire-fighting module within the battery casing. This module includes a fire-fighting bracket and a fire-extinguishing module. The fire-fighting bracket is positioned between the upper cover and the battery module, with a gap between them. The fire-extinguishing module is fixed to the fire-fighting bracket. When the battery module is subjected to abnormalities such as impact, compression, overcharging, or over-discharging, it generates a large amount of heat. As this heat accumulates within the battery compartment, the temperature rises, potentially causing the battery to burn due to high temperature. When the fire-extinguishing module detects abnormal heat, it activates to extinguish the fire, preventing the fire from spreading and causing significant damage to property and lives if not handled promptly after the battery module burns due to high temperature. Attached Figure Description

[0026] Figure 1 A three-dimensional structural diagram of the fire-fighting support provided in this embodiment of the utility model. Figure 1 ;

[0027] Figure 2 A three-dimensional structural diagram of the support leg provided in an embodiment of this utility model. Figure 1 ;

[0028] Figure 3 A three-dimensional structural diagram of the support leg provided in an embodiment of this utility model. Figure 2 ;

[0029] Figure 4 A schematic diagram of the connection structure between the fire-fighting bracket and the fire-extinguishing module provided in this embodiment of the utility model;

[0030] Figure 5 This is a schematic diagram of the connection structure of the fire extinguishing module provided in an embodiment of the present utility model;

[0031] Figure 6 This utility model embodiment provides a main schematic diagram of a battery pack;

[0032] Explanation of reference numerals in the attached figures:

[0033] 100. Battery casing; 101. Battery module;

[0034] 1. Fire-fighting bracket; 11. Base plate; 12. Weight reduction hole; 13. Support leg; 131. First support member; 132. Second support member; 1321. Horizontal support part; 1322. Vertical support part; 1323. Mounting hole;

[0035] 2. Fire extinguishing module; 104. Mounting column. Detailed Implementation

[0036] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0037] It should be further noted that the accompanying drawings and embodiments of this application mainly describe the concept of this application. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this application, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0038] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0039] The terms “length,” “width,” “up,” “down,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0041] Please refer to the following: Figure 1 and Figure 2 The present application will now describe a battery pack for a built-in fire protection module.

[0042] For details, please refer to Figures 4 to 6A battery pack with a built-in fire-fighting module includes a battery casing 100, a battery module 101, and a top cover. The battery casing 100 has a receiving cavity for accommodating the battery module 101, and the top cover is fixed to the battery casing 100. The battery pack also contains a fire-fighting module. The fire-fighting module is located within the receiving cavity and includes a fire-fighting bracket 1 and a fire-extinguishing module 2. The fire-fighting bracket 1 is located between the top cover and the battery module 101, connected to the battery casing 100, and has a gap between it and the battery module 101. The fire-extinguishing module 2 is located on the fire-fighting bracket 1 and is used to extinguish fires in the battery module 101.

[0043] This embodiment provides a battery pack with a built-in fire-fighting module. Compared with the prior art, this application provides a fire-fighting module inside the battery casing 100. The fire-fighting module includes a fire-fighting bracket 1 and a fire-extinguishing module 2. The fire-fighting bracket 1 is located between the upper cover plate and the battery module 101, and there is a gap between the fire-fighting bracket 1 and the battery module 101. The fire-extinguishing module 2 is fixed on the fire-fighting bracket 1. When the battery module 101 is subjected to abnormalities such as collision, compression, overcharging, or over-discharging, it will generate a large amount of heat. As the heat continues to accumulate in the battery box, the temperature inside the battery box will continue to rise, which may cause the battery pack to burn due to high temperature. When the fire-extinguishing module 2 detects abnormal heat, the fire-extinguishing module 2 is activated to extinguish the fire in the battery module 101, thereby preventing the fire from spreading due to the failure to deal with the fire in time after the battery module 101 burns due to high temperature, which could cause significant losses to people's property and lives.

[0044] Please see Figures 1 to 3 In some embodiments, the aforementioned fire-fighting support 1 can be adopted as follows: Figure 2 The structure shown. See also Figure 2 The fire-fighting support 1 includes a base plate 11 and four legs 13. The base plate 11 is arranged in a horizontal direction and has multiple weight-reducing holes 12. The four legs 13 are respectively located at the four corners of the bottom of the base plate 11.

[0045] The fire-fighting bracket 1 is connected to the battery casing 100 via four legs 13. These legs also create a distance between the base plate 11 and the battery module 101. Therefore, when the fire-extinguishing module 2 is installed on the base plate 11, a gap is also created between the fire-extinguishing module 2 and the battery module 101. When the battery module 101 is subjected to abnormalities such as impact, compression, overcharging, or over-discharging, it generates a large amount of heat. As this heat accumulates inside the battery compartment, the temperature rises, potentially causing the battery to burn due to high temperature. When the fire-extinguishing module 2 detects abnormal heat, it activates. Because of the gap between the fire-extinguishing module 2 and the battery module 101, the extinguishing medium sprayed by the fire-extinguishing module 2 can quickly and completely cover the battery module 101 within the battery casing 100, thus extinguishing the fire. Furthermore, the multiple weight-reducing holes 12 not only reduce the overall weight of the fire-fighting bracket 1, but also facilitate the rapid circulation of gas within the cavity, thereby accelerating the coverage of the battery module 101 by the extinguishing medium.

[0046] Specifically, the support leg 13 includes a first support member 131 and a second support member 132. The first support member 131 is vertically disposed at the bottom of the base plate 11, and one end of the first support member 131 is fixedly connected to the bottom of the base plate 11;

[0047] One end of the second support member 132 is fixedly connected to the bottom of the substrate 11. The side wall of the first support member 131 is connected to the second support member 132. The second support member 132 includes a horizontal support portion 1321 and a vertical support portion 1322. The horizontal support portion 1321 is horizontally fixed to the bottom of the vertical support portion 1322, and the horizontal support portion 1321 is provided with a mounting hole 1323.

[0048] Since the horizontal support 1321 is provided with mounting holes 1323, the fire bracket 1 can be connected to the battery casing 100 by bolts, wherein the bolts pass through the mounting holes 1323 and are screwed into the battery casing 100.

[0049] Furthermore, the first support member 131 and the vertical support part 1322 form a T-shaped structure. The T-shaped structure ensures the overall strength of the support leg 13 while also being lightweight.

[0050] Furthermore, the vertical support 1322 has a Z-shaped structure. The Z-shaped structure can better distribute the gravity and external forces generated by the load-bearing object, improving the stability of the entire structure. The use of the Z-shaped structure in conjunction with the first support member 131 increases the rigidity and strength of the overall structure, thereby improving the overall load-bearing capacity.

[0051] Optionally, mounting hole 1323 is an oblong hole. The oblong hole shape of mounting hole 1323 facilitates adjustment of the bolt during installation.

[0052] Based on the above example, the fire extinguishing module 2 includes a thermal aerosol fire extinguishing component and a temperature sensor. The thermal aerosol fire extinguishing component is mounted on the fire-fighting support 1 and is used for fire extinguishing; the temperature sensor is connected to the fire-fighting support 1 and is located below the fire-fighting support 1. There is a gap between the temperature sensor and the upper surface of the battery module 101; the temperature sensor is connected to the thermal aerosol fire extinguishing component.

[0053] When the temperature sensor detects abnormal heat generated by the battery module 101, it transmits the detected abnormal heat value to the thermal aerosol fire extinguishing component. When the temperature exceeds the predetermined fire extinguishing temperature of the thermal aerosol fire extinguishing component, the thermal aerosol fire extinguishing component is activated to extinguish the fire in the battery module 101.

[0054] Furthermore, the thermal aerosol fire extinguishing assembly includes a housing and a thermal aerosol generator. The housing has nozzles located on the side of the housing facing the battery module 101; the thermal aerosol generator is located inside the housing and is used to generate aerosol through a reaction; wherein the aerosol is sprayed out from the nozzles to extinguish the fire.

[0055] When the temperature of the battery module 101 exceeds the critical value, the thermal aerosol generator starts to react and generate aerosol. The generated aerosol is sprayed out from the nozzle on the outer shell. Since the nozzle is located on the side of the outer shell facing the battery module 101, the sprayed aerosol can better cover the battery module 101, thereby extinguishing the fire on the battery module 101.

[0056] Based on the above embodiments, the battery casing 100 is further provided with four mounting posts 104. The four mounting posts 104 are vertically arranged at the four corners of the receiving cavity and bolt holes are provided on the top of the mounting posts 104. The four mounting posts 104 are arranged in a one-to-one correspondence with the four legs 13, and the bolt holes are arranged in a one-to-one correspondence with the mounting holes 1323.

[0057] The mounting column 104 is connected to the support leg 13 by bolts.

[0058] The battery casing 100 is detachably connected to the fire bracket 1 by bolts, which facilitates disassembly and installation.

[0059] Optionally, the fire support bracket 1 is made using sheet metal one-piece molding technology.

[0060] Optionally, the fire-fighting bracket 1 is made of aluminum, which has a thermal conductivity of 237 W / (m·K), second only to copper and silver in heat dissipation performance. Simultaneously, the heat dissipation fins on the heat dissipation base plate increase the heat dissipation area, enabling rapid conduction of heat generated by the battery cells, ensuring the safe and stable operation of the battery cells and circuitry. Using aluminum also significantly reduces the weight of the battery pack, allowing the battery module 101 to accommodate more battery cells within a limited weight, thus improving the energy density of the battery module 101.

[0061] The aluminum material is surface treated with anodizing, which has the following effects: a delicate, smooth, and beautiful surface that is highly acceptable to users. It can effectively enhance the product's image and sense of luxury, create a unique brand image, and attract and retain the target user group.

[0062] Optionally, the hot start temperature of the thermal aerosol fire extinguishing component is ≥130℃.

[0063] Furthermore, the fire extinguishing module 2 is connected to the fire support 1 by bolts.

[0064] Optionally, the base plate 11 is also provided with a plurality of positioning threaded holes for bolting to the fire extinguishing module 2.

[0065] Optionally, the base plate 11 is also provided with a plurality of positioning nut posts. By providing positioning nut posts on the base plate 11, it is convenient to connect the fire extinguishing module 2 to the base plate 11 by bolts.

[0066] A press-fit nut stud, also known as a press-fit stud or nut stud, is a fastener used in sheet metal, thin plates, chassis, and cabinets. The press-fit nut stud has a hexagonal shape at one end and a cylindrical shape at the other, with a relief groove between the hexagonal edge and the cylindrical shape. Its internal shape is an internal thread. A press machine presses the hexagonal head into a pre-drilled hole in the base plate 11 (the diameter of the pre-drilled hole is generally slightly larger than the outer diameter of the cylindrical part of the press-fit stud), causing plastic deformation around the hole. The deformed portion is squeezed into the relief groove of the press-fit nut stud, thus tightening the press-fit nut stud onto the base plate 11, thereby forming an effective fixing internal thread on the base plate 11. The fire extinguishing module 2 is connected to the internal thread of the press-fit nut stud via bolts.

[0067] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery pack for a built-in fire-fighting module, comprising a battery housing (100), a battery module (101), and a top cover, wherein the battery housing (100) has a receiving cavity for receiving the battery module (101), and the top cover is fixedly mounted on the battery housing (100); characterized in that, The built-in fire-fighting module's battery pack also houses a fire-fighting module, which is located within the receiving cavity. The fire-fighting module includes: A fire-fighting bracket (1) is disposed between the upper cover plate and the battery module (101). The fire-fighting bracket (1) is connected to the battery casing (100), and a gap is provided between the fire-fighting bracket (1) and the battery module (101). Fire extinguishing module (2) is installed on the fire-fighting bracket (1) and is used to extinguish fire on battery module (101).

2. The battery pack of the built-in fire-fighting module as described in claim 1, characterized in that, The fire-fighting support (1) includes: The substrate (11) is horizontally arranged and has multiple weight-reducing holes (12). Four legs (13) are respectively located at the four corners of the bottom of the substrate (11).

3. The battery pack of the built-in fire-fighting module as described in claim 2, characterized in that, The outrigger (13) includes: The first support member (131) is vertically disposed at the bottom of the substrate (11), and one end of the first support member (131) is fixedly connected to the bottom of the substrate (11). The second support member (132) is fixedly connected at one end to the bottom of the substrate (11). The side wall of the first support member (131) is connected to the second support member (132). The second support member (132) includes a horizontal support part (1321) and a vertical support part (1322). The horizontal support part (1321) is horizontally fixed at the bottom of the vertical support part (1322), and the horizontal support part (1321) is provided with mounting holes (1323).

4. The battery pack of the built-in fire-fighting module as described in claim 3, characterized in that: The first support member (131) and the vertical support part (1322) form a T-shaped structure.

5. The battery pack of the built-in fire-fighting module as described in claim 4, characterized in that: The vertical support part (1322) has a Z-shaped structure.

6. The battery pack of the built-in fire-fighting module as described in claim 5, characterized in that: The mounting hole (1323) is an oblong hole.

7. The battery pack of the built-in fire-fighting module as described in claim 6, characterized in that, The fire extinguishing module (2) includes: A thermal aerosol fire extinguishing assembly is installed on the fire-fighting bracket (1) and is used for fire extinguishing. A temperature sensor is connected to the fire-fighting bracket (1) and is located below the fire-fighting bracket (1); there is a gap between the temperature sensor and the upper surface of the battery module (101); the temperature sensor is connected to the thermal aerosol fire extinguishing assembly.

8. The battery pack of the built-in fire-fighting module as described in claim 7, characterized in that, Thermal aerosol fire suppression components include: The outer casing has spray holes; the spray holes are located on the side of the outer casing facing the battery module (101); A thermal aerosol generator, wherein the thermal aerosol generator is disposed inside the outer casing, and is used to generate aerosols through reaction; The aerosol is sprayed from the nozzle to extinguish the fire.

9. The battery pack of the built-in fire-fighting module as described in any one of claims 3-8, characterized in that: The battery casing (100) is also provided with four mounting posts (104). The four mounting posts (104) are vertically arranged at the four corners of the receiving cavity, and bolt holes are provided on the top of the mounting posts (104). The four mounting posts (104) are arranged in a one-to-one correspondence with the four legs (13), and the bolt holes are arranged in a one-to-one correspondence with the mounting holes (1323). The mounting column (104) and the support leg (13) are connected by bolts.

10. The battery pack of the built-in fire-fighting module as described in claim 9, characterized in that: The fire extinguishing module (2) is connected to the fire support (1) by bolts.

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