Battery box fire extinguishing device, vehicle battery system and forklift

Abstract

The utility model discloses a battery box fire extinguishing device and vehicle battery system and fork truck, including fire extinguishing host computer, first control valve and second control valve, and fire extinguishing host computer is equipped with fire extinguishing agent output port, first control valve is equipped with first import, always with first import intercommunication's first export, the second export of switchable on-off, second control valve is equipped with second import, the third export of switchable on-off, first control valve is equipped as one time, and fire extinguishing agent output port intercommunication first control valve's first import, and first control valve's first export intercommunication second control valve's first import, when first control valve is equipped as multiple, and multiple first control valve series connection forms multistage flow path, wherein, first import intercommunication fire extinguishing agent output port of first stage, and first export intercommunication second import of last stage, and through first export of former stage intercommunication first import of latter stage between adjacent stage. When the number of battery box changes, only need to adjust the number of first control valve accordingly, namely can complete system expansion or simplification quickly.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing technology, and in particular to a battery box fire extinguishing device, a vehicle battery system, and a forklift. Background Technology

[0002] Forklifts, as key material handling equipment in modern logistics and industry, rely heavily on the safety and reliability of their core power unit—the high-voltage lithium battery—to ensure the overall operational safety of the system. However, under abnormal conditions such as overcharging, over-discharging, internal short circuits, and thermal runaway, high-voltage lithium batteries are highly susceptible to thermal expansion, potentially leading to combustion or even explosions and other serious safety incidents. While various battery fire suppression systems have been developed to address this safety hazard, it's worth noting that existing solutions generally suffer from insufficient system architecture flexibility. They struggle to dynamically adjust and flexibly deploy based on the actual number of battery compartments on each forklift. This limitation not only affects the compatibility of battery fire suppression systems across different forklift models but also, to some extent, restricts the full realization of their safety protection effectiveness. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing a battery box fire extinguishing device, a vehicle battery system, and a forklift, which can be flexibly deployed according to the number of battery boxes configured, so as to match the fire extinguishing capacity with the battery box configuration.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a battery box fire extinguishing device for extinguishing fires in multiple battery boxes, comprising:

[0005] Fire extinguishing unit, which is equipped with a fire extinguishing agent output port;

[0006] At least one first control valve, the first control valve having a first inlet, a first outlet that is always in communication with the first inlet, and a second outlet that can be switched on and off, the second outlet being used to output fire extinguishing agent to a corresponding battery box;

[0007] The second control valve has a second inlet and a third outlet that can be switched on and off with the second inlet. The third outlet is used to output the extinguishing agent to the corresponding battery box.

[0008] When there is one first control valve, the extinguishing agent outlet is connected to the first inlet of the first control valve, and the first outlet of the first control valve is connected to the first inlet of the second control valve. When there are multiple first control valves, the multiple first control valves are connected in series to form a multi-stage flow path from the extinguishing agent outlet to the second control valve. The first inlet of the first stage is connected to the extinguishing agent outlet, the first outlet of the last stage is connected to the second inlet, and adjacent stages are connected to the first inlet of the next stage through the first outlet of the previous stage.

[0009] In a preferred embodiment, the fire extinguishing host is an integrated module, including a fire extinguishing agent storage tank unit and a fluid control unit. The fire extinguishing agent storage tank unit includes at least one high-pressure fire extinguishing agent cylinder, and the fluid control unit includes a main control valve. The inlet end of the main control valve is connected to the inner cavity of the high-pressure fire extinguishing agent cylinder, and the outlet end of the main control valve forms the fire extinguishing agent output port.

[0010] In a preferred embodiment, the fire extinguishing host further includes a controller, wherein the main control valve, the first control valve, and the second control valve are electrically controlled and are electrically connected to the controller.

[0011] In a preferred embodiment, the main control valve, the first control valve, and the second control valve are all solenoid valves.

[0012] In a preferred embodiment, the fire extinguishing host further includes a status display module, which is electrically connected to the controller.

[0013] In a preferred embodiment, the system further includes multiple fire detectors, each of which is disposed in a corresponding battery box and establishes a communication connection with the controller.

[0014] In a preferred embodiment, the extinguishing agent outlet is connected to the first inlet of the first control valve via a first delivery pipe, and the first outlet of the first control valve is connected to the second inlet of the second control valve or the first inlet of the first control valve of an adjacent stage via a second delivery pipe.

[0015] In a preferred embodiment, the second outlet of the first control valve and the third outlet of the second control valve are respectively connected to a third delivery pipe, and the output end of each third delivery pipe is provided with a nozzle. The nozzle is used to connect to the corresponding battery box and is connected to the inlet end of the fire extinguishing agent dispersion pipeline provided inside the battery box.

[0016] This utility model also provides a vehicle battery system, including multiple battery boxes, and a battery box fire extinguishing device as described above. The first outlet and the second outlet are respectively connected to at least one of the multiple battery boxes, so that each battery box can receive fire extinguishing agent through at least one of the first outlet and the second outlet.

[0017] In a preferred embodiment, the plurality of battery boxes are mounted on a bracket, and the fire extinguishing unit is mounted on the bracket using a mounting bracket.

[0018] This utility model also provides a forklift, including the vehicle battery system described above.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The battery box fire extinguishing device of this utility model includes the fire extinguishing host, at least one first control valve, and a second control valve. When the number of battery boxes changes, only the number of first control valves needs to be adjusted accordingly to quickly expand or simplify the system. This design breaks through the limitations of the fixed architecture of traditional fire extinguishing devices, significantly improving the system's adaptability to different vehicle models and ensuring reliable fire protection under various configurations. This design of the utility model is simple and efficient, requiring no changes to the core system architecture, truly realizing the design concept of "configuration on demand and flexible expansion," providing a more convenient and reliable fire safety solution for new energy vehicles, especially forklifts.

[0021] 2. The fire extinguishing host and battery box are arranged on the same bracket, making the overall structure compact and occupying little space. The fire extinguishing host can be installed and removed together with the battery box, making maintenance and replacement convenient.

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the present invention's battery box fire extinguishing device, vehicle battery system, and forklift are not limited to the embodiments described. Attached Figure Description

[0023] Figure 1 This is the front view of this utility model;

[0024] Figure 2 This is a side view of the present invention;

[0025] Figure 3 This is a top view of the present invention;

[0026] Figure 4 This is a three-dimensional structural schematic diagram of the present invention;

[0027] In the diagram, 1 is the fire extinguishing main unit; 11 is the fire extinguishing agent outlet; 2 is the first control valve; 3 is the second control valve; 4 is the first delivery pipe; 5 is the second delivery pipe; 6 is the third delivery pipe; 7 is the nozzle; and 8 is the battery box. Detailed Implementation

[0028] In this invention, the terms "first," "second," and "third," etc., are used only to distinguish similar objects, not to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0029] Please see Figures 1-4As shown, this utility model discloses a battery box fire extinguishing device for extinguishing fires in multiple battery boxes 8. It includes a fire extinguishing main unit 1, at least one first control valve 2, and one second control valve 3. The fire extinguishing main unit 1 has a fire extinguishing agent output port 11. The first control valve 2 has a first inlet, a first outlet that is always connected to the first inlet, and a second outlet that can be switched on and off with the first inlet. The second outlet is used to output fire extinguishing agent to the corresponding battery box 8. The second control valve 3 has a second inlet and a third outlet that can be switched on and off with the second inlet. The third outlet is used to output fire extinguishing agent to the corresponding battery box 8. Each battery box 8 corresponds to at least one first control valve 2 or a second control valve 3.

[0030] When there is only one first control valve 2, the extinguishing agent outlet 11 is connected to the first inlet of the first control valve 2, and the first outlet of the first control valve 2 is connected to the first inlet of the second control valve 3. When there are multiple first control valves 2, they are connected in series to form a multi-stage flow path from the extinguishing agent outlet 11 to the second control valve 3. The first inlet of the first stage is connected to the extinguishing agent outlet 11, the first outlet of the last stage is connected to the second inlet of the second control valve 3, and adjacent stages are connected through the first outlet of the preceding stage to the first inlet of the following stage. Therefore, when the number of battery boxes 8 changes, only the number of first control valves 2 needs to be adjusted accordingly to quickly expand or simplify the system.

[0031] The fire extinguishing control unit 1 adopts a highly integrated modular design, mainly composed of three parts: an extinguishing agent storage tank unit, an intelligent control unit, and a fluid control unit. The extinguishing agent storage tank unit includes at least one high-pressure extinguishing agent cylinder; the fluid control unit includes a main control valve, the inlet of which is connected to the inner cavity of the high-pressure extinguishing agent cylinder, and the outlet of which forms the aforementioned extinguishing agent output port 11. The main control valve, the first control valve 2, and the second control valve 3 are all electrically controlled. The intelligent control unit is electrically connected to the main control valve, the first control valve 2, and the second control valve 3 through a programmable controller to achieve precise control of these valves. The main control valve, the first control valve 2, and the second control valve 3 are preferably solenoid valves, but are not limited to solenoid valves; other suitable automatic control valve types can be selected according to the specific application requirements.

[0032] Preferably, the fire extinguishing control unit 1 also includes a status display module (not shown in the figure), which is electrically connected to the controller and is used to display the system's operating status and fault information in real time. As a preferred embodiment, the status display module uses an LCD screen, which can provide detailed text and graphical information display; in other optional embodiments, alternative solutions such as LED display modules can also be used to meet the display needs of different application scenarios. This design significantly improves the visualization of the system status, making it easier for operators to quickly grasp the system's operating status.

[0033] This invention also includes multiple independently installed fire detectors (not shown in the figure), each installed inside a specific battery box 8 for real-time monitoring of fire hazards in that battery box 8. Each fire detector establishes a communication connection with the controller via wired or wireless communication, forming a complete fire early warning network. In a preferred embodiment, the fire detectors can be high-sensitivity temperature detectors, which immediately send an alarm signal to the controller when an abnormal temperature is detected. In other embodiments, smoke detectors, composite detectors, or other types of fire detection devices can also be selected according to actual needs. This design achieves accurate monitoring of the fire status of each battery box 8, significantly improving system response speed and positioning accuracy.

[0034] The aforementioned extinguishing agent outlet 11 is specifically connected to the first inlet of the first control valve 2 via the first delivery pipe 4. The first outlet of the first control valve 2 is connected to the second inlet of the second control valve 3 or the first inlet of an adjacent first control valve 2 via the second delivery pipe 5. The second outlet of the first control valve 2 and the third outlet of the second control valve 3 are respectively connected to third delivery pipes 6. Each third delivery pipe 6 has a nozzle 7 at its output end. The nozzle 7 is used to connect to the corresponding battery box 8 and is connected to the extinguishing agent dispersion pipeline installed inside the battery box 8.

[0035] In this embodiment, three battery boxes 8 are used as an example, but this is not a limitation; the specific number of battery boxes 8 is configured according to different vehicle models. Therefore, there are two first control valves 2, and three control valves, namely two first control valves 2 and one second control valve 3, correspond one-to-one with the three battery boxes 8. When the number of battery boxes 8 increases or decreases, only the number of first control valves 2 needs to be increased or decreased to make the total number of control valves consistent with the number of battery boxes 8. Specifically, when the number of battery boxes 8 increases, simply disconnect the second control valve 3 connected to the final stage first control valve 2, connect the corresponding number of first control valves 2 in series with the original final stage first control valve 2, and finally connect the original second control valve 3. The second outlet of the newly added first control valve 2 can also be connected to the newly added battery box 8 using the third delivery pipe 6 and the nozzle 7. When the number of battery boxes 8 decreases, only the corresponding number of first control valves 2 needs to be reduced.

[0036] During operation, when the fire detector detects a fire in a battery box, it sends the detected signal to the controller. The controller then controls the main control valve and the first control valve 2 and / or the second control valve 3 corresponding to the battery box on fire to open. This allows the extinguishing agent to be delivered sequentially through the main control valve, the first delivery pipe 4, the first control valve 2 and / or the second control valve 3, and the third delivery pipe 6 to the battery box 8 on fire, thus extinguishing the fire inside the battery box 8.

[0037] Therefore, this invention only requires adjusting the number of first control valves 2 according to the change in the number of battery boxes 8 to quickly expand or simplify the system. This design breaks through the limitations of the fixed architecture of traditional fire extinguishing devices, significantly improving the system's adaptability to different vehicle models and ensuring reliable fire protection under various configurations. This design is simple and efficient, requiring no changes to the core system architecture, truly realizing the design concept of "configuration on demand and flexible deployment," and providing a more convenient and reliable fire safety solution for new energy vehicles.

[0038] Please see Figures 1-4 As shown, this utility model discloses a vehicle battery system comprising multiple battery boxes 8, and a battery box fire extinguishing device as described above. A first outlet and a second outlet are respectively connected to at least one of the multiple battery boxes, enabling each battery box to receive fire extinguishing agent through at least one of the first outlet and the second outlet. Specifically, the total number of first control valves 2 and second control valves 3 is consistent with the number of battery boxes 8, ensuring a one-to-one correspondence between the first outlet, the second outlet, and the battery box 8.

[0039] In this embodiment, multiple battery boxes 8 are mounted on a bracket (not shown in the figure). Specifically, the multiple battery boxes 8 are stacked on the bracket, and the fire extinguishing host 1 is mounted on the bracket using a mounting bracket. Therefore, the fire extinguishing host 1 and the battery boxes 8 are arranged on the same bracket, making the overall structure compact and occupying little space. Furthermore, the fire extinguishing host 1 can be installed and removed together with the battery boxes 8, making maintenance and replacement convenient.

[0040] This utility model discloses a vehicle battery system, which is particularly suitable for industrial vehicles such as forklifts, but is not limited to such application scenarios.

[0041] This utility model relates to a forklift, which includes the vehicle battery system described above.

[0042] For details on the structure and working principle of the battery box fire extinguishing device and the vehicle battery system, please refer to the previous description section; it will not be repeated here.

[0043] The present invention relates to a battery box fire extinguishing device, a vehicle battery system, and a forklift. The parts not covered (such as the internal structure and working principle of the first control valve 2 and the second control valve 3) are the same as or can be implemented using existing technologies.

[0044] The above embodiments are only used to further illustrate the battery box fire extinguishing device, vehicle battery system and forklift of this utility model. However, this utility model is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of the technical solution of this utility model.

Claims

1. A battery case fire extinguishing apparatus for extinguishing a plurality of battery cases, characterized by: include: Fire extinguishing unit, which is equipped with a fire extinguishing agent output port; At least one first control valve, the first control valve having a first inlet, a first outlet that is always in communication with the first inlet, and a second outlet that can be switched on and off, the second outlet being used to output fire extinguishing agent to a corresponding battery box; The second control valve has a second inlet and a third outlet that can be switched on and off with the second inlet. The third outlet is used to output the extinguishing agent to the corresponding battery box. When there is one first control valve, the extinguishing agent outlet is connected to the first inlet of the first control valve, and the first outlet of the first control valve is connected to the first inlet of the second control valve. When there are multiple first control valves, the multiple first control valves are connected in series to form a multi-stage flow path from the extinguishing agent outlet to the second control valve. The first inlet of the first stage is connected to the extinguishing agent outlet, the first outlet of the last stage is connected to the second inlet, and adjacent stages are connected to the first inlet of the next stage through the first outlet of the previous stage.

2. The battery box fire extinguishing device according to claim 1, characterized in that: The fire extinguishing host is an integrated module, including a fire extinguishing agent storage tank unit and a fluid control unit. The fire extinguishing agent storage tank unit includes at least one high-pressure fire extinguishing agent cylinder. The fluid control unit includes a main control valve. The inlet end of the main control valve is connected to the inner cavity of the high-pressure fire extinguishing agent cylinder, and the outlet end of the main control valve forms the fire extinguishing agent output port.

3. The battery box fire extinguishing device according to claim 2, characterized in that: The fire extinguishing host also includes a controller, wherein the main control valve, the first control valve and the second control valve are electrically controlled and are electrically connected to the controller.

4. The battery box fire extinguishing device according to claim 3, characterized in that: The main control valve, the first control valve, and the second control valve are all solenoid valves.

5. The battery box fire extinguishing device according to claim 3, characterized in that: The fire extinguishing host also includes a status display module, which is electrically connected to the controller.

6. The battery box fire extinguishing device according to claim 3, characterized in that: It also includes multiple fire detectors, each of which is installed in its corresponding battery box and establishes a communication connection with the controller.

7. The battery box fire extinguishing device according to claim 1 or 2, characterized in that: The extinguishing agent outlet is connected to the first inlet of the first control valve through the first delivery pipe, and the first outlet of the first control valve is connected to the second inlet of the second control valve or the first inlet of the first control valve of an adjacent stage through the second delivery pipe. The second outlet of the first control valve and the third outlet of the second control valve are respectively connected to a third delivery pipe. Each third delivery pipe has a nozzle at its output end. The nozzle is used to connect to the corresponding battery box and is connected to the inlet end of the fire extinguishing agent dispersion pipeline installed inside the battery box.

8. A vehicle battery system comprising multiple battery boxes, characterized in that: It also includes a battery box fire extinguishing device as described in any one of claims 1-7, wherein the first outlet and the second outlet are respectively connected to at least one of the plurality of battery boxes, so that each battery box can receive fire extinguishing agent through at least one of the first outlet and the second outlet.

9. The vehicle battery system according to claim 8, characterized in that: The multiple battery boxes are mounted on a bracket, and the fire extinguishing unit is mounted on the bracket using a mounting bracket.

10. A forklift, characterized in that: Including the vehicle battery system as described in claim 8 or 9.

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