Passive fire-fighting type energy storage pack battery box
By integrating a fire suppression module and a thermal wire into the energy storage pack battery box, a low-cost, rapid-response fire suppression function is achieved, solving the high cost and environmental protection problems of existing technologies, and making it suitable for overseas markets.
Patent Information
- Application Number
- CN202422903775.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing energy storage products are costly and environmentally unfriendly in terms of fire prevention, especially since the use of perfluorohexanone is restricted. There is a need for an effective and cost-effective fire prevention solution.
It adopts a passive fire-fighting energy storage pack battery box, with a built-in fire-fighting module and fire detection thermal wire. It achieves rapid fire suppression by triggering aerosol discharge through temperature sensing, and does not rely on power supply to start. Combined with an explosion-proof vent valve, it maintains air pressure balance to avoid accidental start-up and complex equipment installation.
It achieves low-cost, rapid-response fire suppression, is environmentally friendly and meets international environmental standards, reduces operation and maintenance costs and explosion risks, and is easy to install without the need for complex equipment.
Smart Images
Figure CN223651545U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of new energy battery box technology, and in particular to a passive fire-fighting energy storage pack battery box. Background Technology
[0002] In recent years, with the continuous use of energy storage products, battery box thermal runaway fires have inevitably occurred one after another. In order to ensure the safe use of energy storage products, all mainstream products on the market are equipped with corresponding fire prevention measures.
[0003] Currently, perfluorohexanone has become the first choice for many manufacturers, but its high price and the restrictions on its use in foreign markets have forced people to broaden their horizons and look for an equally effective and lower-cost fire protection solution. Utility Model Content
[0004] In view of this, the present invention aims to propose a passive fire-fighting energy storage pack battery box, which does not require the installation of complex fire detectors, fire sprinklers and fire communication sensor lines. It only requires the main body of the fire-fighting module to be installed inside the pack battery box and the positions of the fire detection thermal wires to be arranged, so as to achieve a fast and effective pack-level fire extinguishing function.
[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A passive fire-fighting energy storage pack battery box includes a lower box and a cover. The cover is detachably installed on the lower box. After the cover and the lower box are installed together, they form a hollow box structure. The box structure composed of the cover and the lower box contains battery modules, CCS components, a fire-fighting module body, and fire-fighting detection thermal wires. The battery modules are installed on the lower box and include battery module one, battery module two, battery module three, and battery module four. The fire-fighting module body is installed on the lower box through a fire-fighting module fixing bracket. Two fire-fighting detection thermal wires are provided. The two fire-fighting detection thermal wires are led out from the same port of the fire-fighting module body. One fire-fighting detection thermal wire is placed between battery module one and battery module two, and the other fire-fighting detection thermal wire is placed between battery module three and battery module four. The CCS component is welded to the battery cell terminals of the battery module through its own aluminum busbar.
[0006] Furthermore, the fire-fighting module body is equipped with fire extinguishing agents; and aerosol nozzles are provided on the outer surface of the fire-fighting module body.
[0007] Furthermore, the fire protection module fixing bracket is formed by bending and welding sheet metal, and is assembled with the fire protection bracket mounting base set on the lower box by fixing bolts; the fire protection module fixing bracket and the fire protection module body are connected and fixed by a pressing and riveting process.
[0008] Furthermore, an explosion-proof vent valve is installed inside the enclosure.
[0009] Furthermore, the PC blister tray on the CCS component has binding holes.
[0010] Compared with existing technologies, the passive fire-fighting energy storage pack battery box of this utility model has the following advantages:
[0011] (1) Low cost, easy installation, no need for power supply to start, and no accidental start-up;
[0012] (2) The fixed thermal wire of the fire detection is easy to operate and the wiring is reasonably distributed, which can ensure a rapid response when any cell experiences thermal runaway;
[0013] (3) No additional maintenance is required after installation, saving a lot of later maintenance costs;
[0014] (4) The fire extinguishing materials do not contain fluoride, are safe and environmentally friendly, and meet the relevant environmental protection standards of foreign products. Therefore, they are also suitable for overseas markets with environmental protection requirements. Attached Figure Description
[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0016] Figure 1 This is a schematic diagram of the passive fire-fighting energy storage pack battery box described in an embodiment of the present invention;
[0017] Figure 2 A schematic diagram of the arrangement of the fire detection thermal wires provided for an embodiment of this utility model;
[0018] Figure 3 This is a schematic diagram of the binding position of the fire detection thermal wire provided in an embodiment of the present utility model;
[0019] Figure 4 This is a schematic diagram of the installation of the fire protection module body provided in an embodiment of the present utility model.
[0020] Explanation of reference numerals in the attached figures:
[0021] 1. Lower enclosure; 2. Battery module; 3. CCS component; 4. Fire protection module mounting bracket; 5. Fire protection module body; 6. Fire protection detection thermal wire; 7. Battery module one; 8. Battery module two; 9. Battery module three; 10. Battery module four; 11. Wiring holes; 12. Fire protection bracket mounting base; 13. Fixing bolts; 14. Cover. Detailed Implementation
[0022] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0024] This utility model discloses a passive fire-fighting energy storage pack battery box, which integrates a passive fire-fighting device inside the pack battery box; the fire-fighting module body 5 (also known as the fire-fighting device) is activated by a thermal wire, which does not require power to start and will not be activated by mistake. When the battery experiences thermal runaway, the temperature inside the battery box rises rapidly, thereby triggering the fire-fighting device. The fire-fighting device instantly sprays particulate aerosol agent, which quickly extinguishes the open flame inside the battery box through endothermic decomposition and gas-phase chemical inhibition, while isolating the air and preventing the battery from reigniting.
[0025] like Figures 1-4As shown, this utility model is a passive fire-fighting energy storage pack battery box, including a lower box 1 and a cover 14. The cover 14 is detachably installed on the lower box 1. After the cover 14 and the lower box 1 are installed together, they form a hollow box structure. The box structure composed of the cover 14 and the lower box 1 houses battery modules 2, CCS components 3, fire-fighting module body 5, and fire detection thermal wires 6. The battery modules 2 are installed on the lower box 1. There are four battery modules 2, namely battery module one 7, battery module two 8, battery module three 9, and battery module four 10. The fire-fighting module body 5 is located at the front end of the battery box. The fire-fighting module body 5 is connected to the fire-fighting device via a fire-fighting device. The module mounting bracket 4 is installed on the lower housing 1. Two fire detection thermal wires 6 are provided, with one end of each wire located inside the fire module body 5. Both wires extend from the same port of the fire module body 5. One wire is placed between battery module 1 (7) and battery module 2 (8), and the other between battery module 3 (9) and battery module 4 (10). This wiring method ensures that if any battery cell experiences thermal runaway, the fire detection thermal wire 6 can quickly detect the temperature rise signal and trigger the fire module body 5. The CCS component 3 is welded to the battery cell terminals of battery module 2 via its own aluminum busbar. The number of CCS components 3 corresponds one-to-one with the number of battery modules 2. In this invention, there are four battery modules 2; therefore, there are also four CCS components 3. One CCS component 3 is installed on each of battery module 1 (7), battery module 2 (8), battery module 3 (9), and battery module 4 (10). The PC blister tray on the CCS component 3 has binding holes 11 for binding two fire detection thermal wires 6 (in actual application, the two thermal wires can be fixed together with the PC blister tray in the CCS component 3 using cable ties). This ensures that when any cell in the battery module 2 experiences thermal runaway, the fire detection thermal wire 6 can quickly detect the temperature rise signal and trigger the fire module body 5. The CCS component 3 is existing technology. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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 utility model.
[0026] The fire-fighting module body 5 contains a fire extinguishing agent, consisting of 60g of aerosol and a portion of an oxidizer. Upon spraying, it extinguishes the fire through endothermic decomposition and gas-phase chemical inhibition. Aerosol nozzles are located on the outer surface of the fire-fighting module body 5. In practical applications, multiple aerosol nozzles can be installed on two or four outer surfaces of the fire-fighting module. It is important to note that there should be no copper busbars, cables, or other obstructions around the aerosol nozzles, and the nozzles should be located near explosion-proof vent valves. When the ambient temperature rises to a certain value, the fire detection thermal wire 6 will automatically and rapidly ignite. When the fire reaches its base, it will trigger the fire-fighting module body 5 to release the aerosol. In this description, unless otherwise stated, "multiple" means two or more.
[0027] The fire protection module fixing bracket 4 is formed by bending and welding sheet metal. It is assembled with the fire protection bracket mounting base 12 set on the lower box 1 by fixing bolts 13. The fire protection bracket mounting base 12 is laser welded to the lower box 1. The fire protection module body 5 is fixed on the fire protection module fixing bracket 4. Specifically, four bolts are riveted on the relatively large plane of the fire protection module fixing bracket 4 to connect and fix it to the fire protection module body 5.
[0028] An explosion-proof vent valve is installed inside the cover 14. When the battery module 2 experiences thermal runaway, the cells of the battery module 2 will emit a large amount of gas. As the gas increases, the gas pressure inside the battery box will continue to increase. When the gas pressure inside the battery box reaches a certain value, the explosion-proof vent valve will open and quickly release the gas inside the battery box to maintain the pressure balance inside and outside the battery box. By releasing a large amount of gas inside the battery box, the risk of explosion and ignition is effectively reduced.
[0029] In actual operation, when any cell in battery module 2 experiences thermal runaway, the fire detection thermal wire 6 can quickly detect the temperature rise signal. When the ambient temperature rises to a certain value, the fire detection thermal wire 6 will automatically and rapidly ignite. When the fire reaches its base, it will trigger the fire suppression module body 5 to release aerosols. Through endothermic decomposition and gas-phase chemical inhibition, the open flame inside the battery box will be quickly extinguished, while isolating the air and preventing secondary reignition of the battery. Simultaneously, when battery module 2 experiences thermal runaway, the cells of battery module 2 will emit a large amount of gas. As the gas increases, the gas pressure inside the battery box will continuously increase. When the gas pressure inside the battery box reaches a certain value, the explosion-proof vent valve will open and quickly release the gas inside the battery box, maintaining pressure balance inside and outside the battery box. By releasing a large amount of gas from inside the battery box, the risk of explosion and ignition is effectively reduced. The pack battery box described in this utility model does not require the installation of complex fire detectors, fire sprinklers and fire communication sensor lines. It only requires the fire module body 5 to be installed inside the pack battery box and the positions of the fire detection thermal wires 6 to be arranged to achieve a fast and effective pack-level fire extinguishing function.
[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A passive fire-fighting energy storage pack battery box, comprising a lower box body (1) and a cover (14), wherein the cover (14) is detachably mounted on the lower box body (1), and the cover (14) and the lower box body (1) are assembled together to form an internally hollow box structure, characterized in that: The enclosure (14) and the lower box (1) contain a battery module (2), a CCS component (3), a fire protection module body (5), and a fire detection thermal wire (6). The battery module (2) is installed on the lower box (1). The battery module (2) includes battery module one (7), battery module two (8), battery module three (9), and battery module four (10). The fire protection module body (5) is installed on the lower box (1) through a fire protection module fixing bracket (4). There are two fire detection thermal wires (6). The two fire detection thermal wires (6) are led out from the same port of the fire protection module body (5). One fire detection thermal wire (6) is placed between battery module one (7) and battery module two (8), and the other fire detection thermal wire (6) is placed between battery module three (9) and battery module four (10). The CCS component (3) is welded to the battery cell terminal of the battery module (2) through its own aluminum busbar.
2. The passive fire-fighting energy storage pack battery box according to claim 1, characterized in that: Fire extinguishing agent is installed inside the main body (5) of the fire protection module; aerosol nozzles are installed on the outer surface of the main body (5) of the fire protection module.
3. The passive fire-fighting energy storage pack battery box according to claim 1, characterized in that: The fire protection module fixing bracket (4) is formed by bending and welding sheet metal, and is assembled with the fire protection bracket mounting base (12) set on the lower box (1) by fixing bolts (13); the fire protection module fixing bracket (4) and the fire protection module body (5) are connected and fixed by riveting process.
4. A passive fire-fighting energy storage pack battery box according to claim 1, characterized in that: An explosion-proof vent valve is installed inside the housing (14).
5. A passive fire-fighting energy storage pack battery box according to claim 1, characterized in that: The PC blister tray on the CCS component (3) has a binding hole (11).