Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment. The battery device comprises a battery monomer, a box body and a fire-fighting assembly, the box body is used for accommodating the battery monomer, and the fire-fighting assembly is arranged on one side of the box body away from the battery monomer. A fire-fighting liquid flow channel is arranged in the fire-fighting assembly and provided with an outlet and an inlet, the inlet is used for being connected with a fire extinguishing agent storage tank, and the outlet corresponds to the single battery. By means of the structure, the battery device can be precisely cooled, and damage to other parts after thermal runaway of the battery device occurs is reduced.

Description

Technical Field

[0001] This application relates to the field of batteries, and in particular to a battery device and an electrical appliance. Background Technology

[0002] Batteries are widely used in various electronic devices, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy airplanes, electric toy ships, power tools, and energy storage systems, etc.

[0003] Currently, how to reduce the damage to other components of electrical equipment caused by high-temperature runaway during battery operation is also one of the research problems in this field. Utility Model Content

[0004] In view of the above problems, this application provides a battery device and an electrical device that can precisely cool the battery device and reduce the damage to other components caused by thermal runaway of the battery device.

[0005] In a first aspect, this application provides a battery device, including a battery cell, a housing, and a fire suppression assembly. The housing houses the battery cell, and the fire suppression assembly is located on the side of the housing opposite to the battery cell. The fire suppression assembly contains a fire suppression fluid channel with an outlet and an inlet. The inlet is connected to a fire extinguishing agent storage tank, and the outlet is located corresponding to the battery cell.

[0006] In the technical solution of this application embodiment, a fire-fighting component is installed outside the enclosure. When the battery experiences thermal runaway, fire-fighting liquid can be introduced into the fire-fighting liquid channel to cool and extinguish the battery device. The outlet of the fire-fighting liquid channel is positioned towards the individual battery cells, enabling precise cooling and extinguishing of those cells. This reduces the risk of fire spread caused by inaccurate spraying of fire-fighting liquid due to concealed battery installation locations, achieving rapid and precise cooling and fire suppression. Simultaneously, it cools the enclosure of the battery device and the electrical equipment in contact with it, delaying the rapid temperature increase of a single battery cell due to thermal runaway, which could lead to smoke and fire in other battery devices. It also reduces the risk of smoke and fire in other components connected to the electrical device, minimizing casualties around the electrical equipment and slowing the spread of fire.

[0007] In some embodiments, the battery device further includes a control component connected to the inlet. The control component controls the connection and disconnection between the fire-fighting component and the extinguishing agent storage tank. By including the control component, the fire-fighting component can be activated promptly when needed, achieving precise cooling and improving control efficiency.

[0008] In some embodiments, the fire suppression system includes a fire suppression conduit and first nozzles. The fire suppression conduit extends along the arrangement direction of the battery cells, and one end of the conduit is connected to a fire suppression fluid supply. Multiple first nozzles are spaced apart along the extension direction of the fire suppression conduit, and each first nozzle has spray holes facing the battery cells. In the above structure, by providing the fire suppression conduit, the fire suppression fluid can be laid along the path of the battery cells, achieving comprehensive coverage of all battery cells in the battery device and improving the fire suppression effect. The first nozzles allow for simultaneous cooling and fire suppression of multiple battery cells, reducing the combustion time of the battery cells and minimizing damage to surrounding battery cells or equipment caused by thermal runaway.

[0009] In some embodiments, the fire-fighting conduit includes any one of a metal flexible hose, a corrugated pipe, a rubber hose, a polyethylene pipe, and a polypropylene pipe. The above-described structure has a certain degree of elasticity and deformation capability, allowing for installation according to the gaps between the battery device and other equipment, reducing the additional space occupied by the fire-fighting components.

[0010] In some embodiments, the fire-fighting assembly further includes a second nozzle and a pressure-opening valve disposed on the second nozzle. The second nozzle is connected to a fire-fighting pipeline, and the pressure-opening valve controls the on / off state of the second nozzle. The pressure-opening valve can be opened under a preset pressure. This structure adds a second nozzle, increases the maximum flow rate of the fire-fighting fluid, and improves the cooling and extinguishing efficiency of the fire-fighting assembly. Furthermore, the pressure-opening valve on the second nozzle can be opened for rapid cooling when needed, and closed to reduce waste when only a small flow of fire-fighting fluid is required.

[0011] In some embodiments, there are multiple second nozzles, which are alternately arranged with the first nozzle. This structure, with the second nozzles staggered with the first nozzle, ensures that fire-fighting liquid is evenly sprayed onto all battery cells when rapid cooling and low-flow-rate fire-fighting liquid application are required, thus improving the efficiency of cooling and fire suppression.

[0012] In some embodiments, the pressure-activated valve includes a cover plate, a fixing block, and an elastic element. The cover plate covers the end of the second nozzle furthest from the fire pipeline, and the fixing block is disposed opposite to the cover plate and located inside the second nozzle. The elastic element is connected at both ends to the cover plate and the fixing block, respectively. Under the action of fluid in the fire pipeline, the elastic element can stretch to form a channel for fluid flow between the cover plate and the second nozzle. With this structure, the cover plate closes when only a small flow of fire-fighting fluid is needed, reducing waste. The fixing block is used to fix the elastic element inside the second nozzle. When rapid cooling and fire extinguishing are required, the water pressure of the fire-fighting fluid in the fire pipeline acts on the cover plate, stretching the elastic element, separating the cover plate from the second nozzle, and opening the second nozzle. The opening and closing of the second nozzle can be controlled by adjusting the water pressure in the fire pipeline, making operation simple, efficient, and accurate.

[0013] In some embodiments, the fire-fighting assembly further includes a fire extinguishing agent storage tank containing fire extinguishing agent, and the fire extinguishing agent storage tank is connected to an inlet. In the above structure, by storing a certain amount of fire extinguishing agent in the fire extinguishing agent storage tank, it can be sprayed in time to cool and extinguish the battery cells before external fire extinguishing liquid enters the fire-fighting pipeline. This can promptly control small-scale thermal runaway in the battery device and provide a buffer time for subsequent replenishment of fire-fighting liquid, reducing the spread of thermal runaway in the battery cells and improving the operational stability of the battery device.

[0014] In some embodiments, the control component includes a first connecting pipe, a solenoid valve, and a control device. The first connecting pipe connects the inlet to the extinguishing agent storage tank, and the solenoid valve is located between the extinguishing agent storage tank and the inlet. The control device is electrically connected to the battery management system and receives control signals from the battery management system. The control device is connected to the solenoid valve and controls the opening and closing of the solenoid valve according to the control signals. In the above structure, the first connecting pipe connects the extinguishing agent storage tank and the fire-fighting pipeline, and facilitates the installation of the solenoid valve. The solenoid valve can control the opening or closing of the first connecting pipe through electrical signals, improving control efficiency. The control device can promptly control the opening of the solenoid valve according to the signals from the battery management system to cool and extinguish individual battery cells, improving the timeliness and convenience of activating the fire-fighting component.

[0015] In some embodiments, the control component includes a second connecting pipe and a manual valve. The second connecting pipe connects the inlet to the extinguishing agent storage tank, and the manual valve is located on the second connecting pipe. In the above structure, the second connecting pipe is connected in parallel with the first connecting pipe, increasing the control channel for the extinguishing agent input fire channel. In the event of solenoid valve failure, the manual valve can be opened to promptly input the extinguishing agent into the fire channel for cooling and extinguishing the fire.

[0016] In some embodiments, the control assembly further includes a valve operating mechanism, which includes a pressure rod, a transmission block, a connecting rod, and a rotating block. The transmission block is connected to one end of the pressure rod along a first direction, and the connecting rod is located on one side of the transmission block along a second direction. The first and second directions intersect, and the connecting rod is inclined towards the surface of the transmission block. The rotating block is located at the end of the connecting rod away from the transmission block and is connected to a manual valve. The pressure rod moves towards the transmission block, causing the transmission block to move along the first direction. The transmission block pushes the connecting rod to move along the second direction, and the movement of the connecting rod pushes the rotating block to rotate, thereby opening the manual valve. Applying force to the transmission block by pressing the pressure rod with a finger or stepping on it causes the transmission block to move, which in turn moves the connecting rod. The movement of the connecting rod pushes the rotating block to rotate, and the rotation of the rotating block opens the manual valve. This structure, by providing a valve operating mechanism, allows for remote valve opening from a certain distance from the manual valve. When the battery device is on fire and emitting smoke, maintaining a safe distance during valve opening improves efficiency and ensures operator safety.

[0017] In some embodiments, the fire-fighting assembly further includes a telescopic pipe and a one-way valve. One end of the telescopic pipe is connected to the fire-fighting pipeline, and the other end is used to connect to the fire-fighting water supply equipment. The one-way valve is located between the telescopic pipe and the fire-fighting pipeline, and is used to restrict the flow of liquid in the fire-fighting pipeline from the fire-fighting interface to the telescopic pipe. In the above structure, by providing a telescopic pipe, it is easy to connect to an external fire-fighting power source, increase the flow rate of fire-fighting liquid, improve the speed of cooling and extinguishing fires, and reduce damage caused by fire or high temperatures.

[0018] Secondly, this application provides an electrical device that includes the battery device described in the above embodiments, the battery device being used to provide electrical energy.

[0019] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0020] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of a vehicle according to one embodiment of this application;

[0022] Figure 2 This is an exploded view of the battery device provided in some embodiments of this application;

[0023] Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application;

[0024] Figure 4 This is a schematic diagram of the structure of fire-fighting components according to some embodiments of this application;

[0025] Figure 5 This is a schematic diagram of the structure of a pressure-opening valve according to some embodiments of this application;

[0026] Figure 6 This is a schematic diagram of the structure of a fire-fighting component according to other embodiments of this application;

[0027] Figure 7 This is a schematic diagram of the valve control mechanism in some other embodiments of this application.

[0028] Detailed Explanation of Reference Numerals

[0029] 1. Vehicle; 2. Battery unit; 3. Controller; 4. Motor; 5. Housing; 51. First housing section; 52. Second housing section; 53. Receiving space; 6. Battery cell; 10. Electrode assembly; 24. Pressure relief mechanism; 25. Electrode terminal; 40. Housing; 8. Battery management system; X, first direction; Y, second direction; 7. Firefighting components; 701. Firefighting fluid channel; 702. Outlet; 703. Inlet; 704. Firefighting pipe; 705. First nozzle; 706. Spray nozzle; 707. Second spray pipe; 708. Pressure-activated valve; 709. Cover plate; 710. Fixing block; 711. Elastic element; 712. Extinguishing agent storage tank; 713. First connecting pipe; 714. Solenoid valve; 715. Second connecting pipe; 716. Manual valve; 717. Valve control mechanism; 718. Pressure rod; 719. Transmission block; 720. Connecting rod; 721. Rotating block; 722. Telescopic pipe; 723. One-way valve; 724. One-way valve. Detailed Implementation

[0030] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0032] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0035] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0036] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to 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 the embodiments of this application.

[0037] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0038] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0039] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0040] Battery systems are typically installed in vehicles or other electrical equipment to supply power. A battery system usually consists of multiple individual battery cells. During operation, these cells may experience thermal runaway, such as combustion or the release of high-temperature liquids from a pressure relief valve. These events can damage surrounding battery cells or equipment, and in severe cases, may cause other battery cells or equipment to burn or explode.

[0041] To address the aforementioned problems, this application provides a battery device with a fire suppression component installed outside its casing. In the event of thermal runaway, fire suppression liquid can be introduced into the fire suppression liquid channel to cool and extinguish the battery device. The outlet of the fire suppression liquid channel is positioned towards the individual battery cells, enabling precise cooling and extinguishing of those cells. This reduces the risk of fire spread caused by inaccurate fire suppression liquid spraying due to concealed battery installation locations, achieving rapid and precise cooling and fire suppression. Simultaneously, it cools the battery device casing and related electrical equipment, delaying the rapid temperature increase of a single battery cell due to thermal runaway, which could lead to smoke and fire in other battery units, and reducing the risk of smoke and fire in other components connected to the electrical equipment. This reduces casualties around the electrical equipment and slows the spread of fire. In some embodiments, the battery device also includes a control component connected to the inlet, used to control the connection and disconnection between the fire suppression component and the extinguishing agent storage tank. By including the control component, the fire suppression component can be activated promptly when needed, providing precise cooling and improving control efficiency.

[0042] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0043] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0044] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0045] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0046] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0047] In this embodiment of the application, the battery cell can be a secondary battery cell, which refers to a battery cell that can be used again after being discharged by recharging to activate the active materials.

[0048] Battery cells may include, but are not limited to, lithium-ion battery cells, sodium-ion battery cells, sodium-lithium-ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium-sulfur battery cells, magnesium-ion battery cells, nickel-metal hydride battery cells, nickel-cadmium battery cells, lead-acid battery cells, etc.

[0049] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. This application does not have any particular limitations.

[0050] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0051] In some embodiments, the battery device may be an energy storage device. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0052] The battery device disclosed in this application can be used in electrical devices that use the battery device as a power source or in various energy storage systems that use the battery device as an energy storage element. The electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Among them, electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0053] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0054] Figure 1 The diagram shows the structure of a vehicle provided in some embodiments of this application.

[0055] like Figure 1 As shown, a battery device 2 is installed inside the vehicle 1. The battery device 2 can be located at the bottom, front, or rear of the vehicle 1. The battery device 2 can be used to power the vehicle 1; for example, the battery device 2 can serve as the operating power source for the vehicle 1.

[0056] The vehicle 1 may also include a controller 3 and a motor 4. The controller 3 is used to control the battery device 2 to supply power to the motor 4, for example, for the power needs of the vehicle 1 during starting, navigation and driving.

[0057] In some embodiments of this application, the battery device 2 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0058] Figure 2 This is an exploded structural diagram of a battery device provided in some embodiments of this application.

[0059] The housing 5 is used to accommodate the battery cells 6, and the housing 5 can have various structures. In some embodiments, the housing 5 may include a first housing portion 51 and a second housing portion 52, which overlap each other, and together define a receiving space 53 for accommodating the battery cells. Of course, the first housing portion 51 and the second housing portion 52 can be various shapes, such as cylinders, cuboids, etc.

[0060] In the battery device 2, there can be one or more battery cells 6. If there are multiple battery cells 6, they can be connected in series, in parallel, or in a mixed manner. A mixed connection means that multiple battery cells 6 are connected in both series and parallel. Multiple battery cells 6 can be directly connected in series, in parallel, or in a mixed manner, and then the whole assembly of multiple battery cells 6 is housed in the housing 5. Alternatively, multiple battery cells can first be connected in series, in parallel, or in a mixed manner to form a battery module, and then multiple battery modules can be connected in series, in parallel, or in a mixed manner to form a whole assembly, which is then housed in the housing 5.

[0061] In some alternative embodiments, the battery cell 6 can also be directly housed within the housing 5 to reduce the number of connecting or supporting components required to assemble the battery module and improve the energy density of the battery device 2.

[0062] For example, the battery cell 6 may be the smallest unit that makes up the battery device 2.

[0063] Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application.

[0064] like Figure 3 As shown, in some embodiments, the battery cell 6 includes a housing 40 and an electrode assembly 10 housed within the housing 40. The housing 40 is used to encapsulate the electrode assembly 10 and components such as the electrolyte. In some embodiments, the battery cell 6 also includes an electrolyte housed within the housing 40. The electrolyte acts as a conductor of ions between the positive and negative electrodes. The electrolyte can be liquid, gel-like, or solid.

[0065] In some embodiments, the battery cell 6 includes electrode terminals 25. The electrode terminals 25 are electrically connected to the electrode assembly 10 for outputting or inputting electrical energy into the battery cell 6. In some embodiments, the battery cell 6 includes a pressure relief mechanism 24, which is used to rupture and release internal high-temperature materials when the internal pressure of the battery cell 6 exceeds a threshold, thereby reducing the internal pressure of the battery cell 6 and decreasing the risk of more severe damage to the battery cell 6.

[0066] Please refer to the reference. Figures 2 to 4 , Figure 2 This is an exploded view of the battery device provided in some embodiments of this application. Figure 3 This is an exploded structural diagram of a battery cell provided in some embodiments of this application. Figure 4 This is a structural schematic diagram of a fire-fighting component according to an embodiment of this application.

[0067] As shown in the figure, this application provides a battery device 2, including a battery cell 6, a housing 5, and a fire-fighting component 7. The housing 5 is used to house the battery cell 6, and the fire-fighting component 7 is located on the side of the housing 5 away from the battery cell 6. The fire-fighting component 7 is provided with a fire-fighting fluid channel 701, which has an outlet 702 and an inlet 703. The inlet 703 is used to connect to a fire-extinguishing agent storage tank 712, and the outlet 702 is provided corresponding to the battery cell 6.

[0068] The fire suppression component 7 is located on one side of the battery cell 6 along the first direction X, and a housing structure 5 is provided between the battery cell 6 and the fire suppression component 7. The first direction X can be the height direction of the battery cell 6. The outlet 702 corresponding to the battery cell 6 means that, along the first direction X, the orthographic projection of the battery cell 6 on the housing 5 and the orthographic projection of the outlet 702 of the fire suppression component 7 on the housing 5 at least partially overlap. It can be understood that even if part of the housing structure 5 is located between the fire suppression component 7 and the battery cell 6, the fire suppression liquid sprayed at the outlet 702 can still cool the battery cell 6 by cooling the housing 5, and can extinguish the flame generated by the battery cell 6 by reducing the temperature.

[0069] Optionally, the outlet 702 on the fire-fighting component 7 is an opening for the fire-fighting fluid to flow out. There can be multiple outlets 702, and each outlet 702 corresponds to a multiple battery cell 6.

[0070] Optionally, the fire-fighting component 7 may include two metal plates arranged opposite each other, with fire-fighting fluid channels 701 formed inside the metal plates.

[0071] For example, the fire-fighting component 7 is located in the gap between the housing 5 and the vehicle 1. The above structure can make full use of the space between the battery device 2 and the vehicle body, and can simultaneously cool and extinguish the fire on the vehicle body and the battery cells 6 by spraying fire-fighting liquid, thereby improving the efficiency of fire-fighting and the safety of the personnel on the vehicle 1.

[0072] In the technical solution of this application embodiment, a fire-fighting component 7 is installed outside the housing 5. When the battery experiences thermal runaway, fire-fighting liquid can be introduced into the fire-fighting liquid channel 701 to cool and extinguish the battery device 2. The outlet 702 of the fire-fighting liquid channel 701 is oriented towards the battery cell 6, enabling precise cooling and extinguishing of the battery cell 6. This reduces the spread of fire caused by the inaccurate spraying of fire-fighting liquid due to the concealed installation location of the battery device 2, achieving rapid and accurate cooling and fire extinguishing. At the same time, the fire-fighting component 7 cools the housing 5 of the battery device 2 and other equipment in contact with the battery device 2, delaying the rapid increase in temperature of a battery cell 6 due to thermal runaway, which could cause other battery devices 2 to smoke and catch fire. It also reduces the risk of other components connected to the battery device catching fire due to heat, thereby reducing casualties and delaying the spread of fire.

[0073] In some embodiments of this application, the battery device 2 further includes a control component connected to the inlet 703, which is used to control the connection and disconnection between the fire-fighting component 7 and the fire extinguishing agent storage tank 712.

[0074] For example, the control component can use sensor technology and signal processing algorithms to monitor the status of the battery device 2 in real time and immediately control the fire suppression component 7 to activate when an anomaly is detected. This efficient response shortens the time it takes for the extinguishing agent to reach the ignition point, improving fire suppression efficiency.

[0075] In addition to basic control functions, the control component also possesses intelligent management capabilities. It can connect to the monitoring system of battery unit 2, enabling real-time data transmission and sharing. Through data analysis, the control component can predict potential malfunctions or fire risks in battery unit 2 and take corresponding preventative measures in advance. Furthermore, the control component can automatically adjust the spray volume and frequency of the extinguishing agent based on the actual usage of battery unit 2, achieving a more precise and efficient fire extinguishing effect.

[0076] By setting up control components, the fire-fighting component 7 can be activated promptly when needed, providing precise cooling and improving control efficiency.

[0077] In some embodiments of this application, the fire-fighting component 7 includes a fire-fighting conduit 704 and a first nozzle 705. The fire-fighting conduit 704 extends along the arrangement direction of the battery cells 6, and one end of the fire-fighting conduit 704 is used to connect to a fire-fighting fluid supply source. A plurality of first nozzles 705 are spaced apart along the extension direction of the fire-fighting conduit 704, and each first nozzle 705 is provided with a spray hole 706, which faces the battery cells 6.

[0078] Optionally, the arrangement of the fire-fighting pipe 704 and the first nozzle 705 can be customized according to the actual situation of the battery device 2. For example, the length and diameter of the fire-fighting pipe 704, the number and position of the first nozzle 705, and the size of the sprinkler holes 706 can be adjusted according to the arrangement, number, and spacing of the battery cells 6 to improve the fire-fighting effect. The fire-fighting pipe 704 needs to be made of materials that are resistant to high temperatures and corrosion and have a certain strength to ensure its stability and reliability in harsh environments.

[0079] Optionally, the fire hydrant 704 and the first nozzle 705 can be manufactured using the same material. For example, the fire hydrant 704 and the first nozzle 705 can be an integrally formed structure.

[0080] For example, multiple battery cells 6 are stacked sequentially along the second direction Y in the housing 5, and a fire-fighting pipe 704 is laid along the second direction Y. The fire-fighting pipe 704 is provided with a fire-fighting flow channel, which also extends along the second direction Y. Therefore, the flow path of the fire-fighting liquid in the fire-fighting flow channel matches the arrangement path of the multiple battery cells 6. By introducing fire-fighting liquid into the fire-fighting pipe 704, the fire-fighting liquid can sequentially cool and extinguish the fire on the multiple battery cells 6.

[0081] The above-described technical solution involves setting up a fire-fighting conduit 704 extending along the arrangement direction of multiple battery cells 6 and connecting to multiple first nozzles 705, achieving comprehensive coverage of all battery cells 6 in the battery device 2. Regardless of which battery cell 6 experiences thermal runaway or fire, it can quickly receive extinguishing agent spraying, improving the effectiveness of fire suppression. The multiple first nozzles 705, spaced apart along the fire-fighting conduit 704, can simultaneously cool and extinguish multiple battery cells 6, reducing the burning time of the battery cells 6 and mitigating the damage caused by thermal runaway of a battery cell 6 to surrounding battery cells 6 or equipment.

[0082] In some embodiments of this application, the fire-fighting conduit 704 includes any one of a metal flexible hose, a corrugated pipe, a rubber hose, a polyethylene pipe, and a polypropylene pipe.

[0083] Metal hoses possess excellent flexibility and corrosion resistance, and can withstand certain pressure and temperature fluctuations. Their internal spiral steel wire structure provides good support and deformation capacity, allowing the metal hoses to bend and stretch according to the gaps between the battery device 2 and other electrical equipment, enabling flexible installation.

[0084] A bellows is a type of pipe with a continuous corrugated structure, allowing it to deform in both the axial and radial directions. This characteristic enables the bellows to adapt to the complex environment surrounding the battery device, achieving good installation, especially in situations where space is limited or bending is required.

[0085] The rubber hose possesses high elasticity and corrosion resistance, enabling it to withstand significant pressure changes while maintaining excellent sealing performance. Its flexibility allows for easy bending and stretching to meet the installation requirements of battery device 2.

[0086] Polyethylene (PE) pipe is a lightweight, high-strength piping material with excellent chemical corrosion resistance and abrasion resistance, maintaining stable performance in various harsh environments. Furthermore, PE pipe also possesses a degree of flexibility, allowing it to adapt to a certain degree of bending and deformation.

[0087] Similar to PE pipes, polypropylene (PP) pipes are also a lightweight, high-strength piping material. They possess excellent heat resistance and chemical corrosion resistance, maintaining stable performance in high-temperature and corrosive environments. The flexibility of PP pipes also allows them to adapt to a certain degree of bending and deformation.

[0088] The aforementioned structure, employing flexible and deformable pipes such as metal hoses, corrugated pipes, rubber hoses, polyethylene pipes, and polypropylene pipes, allows the fire-fighting pipe 704 to be flexibly bent and extended according to the installation requirements of the battery device 2, reducing additional space occupation and improving installation convenience and efficiency. Simultaneously, this design enhances the adaptability and stability of the fire-fighting component 7 in various harsh environments, improves the operational stability of the battery device 2, and enhances the safety of occupants during vehicle 1 operation.

[0089] like Figure 4 as well as Figure 5 As shown, in some embodiments of this application, the fire-fighting component 7 further includes a second nozzle 707 and a pressure-opening valve 708 disposed on the second nozzle 707. The second nozzle 707 is connected to the fire-fighting pipeline 704, and the pressure-opening valve 708 is used to control the opening and closing of the second nozzle 707. The pressure-opening valve 708 can be opened under a preset pressure.

[0090] The second nozzle 707, as a newly added fire-fighting liquid injection channel, is connected to the fire-fighting pipe 704, which increases the maximum flow rate of the fire-fighting liquid, thereby accelerating the cooling and extinguishing speed. The design of the second nozzle 707 can be customized according to actual needs, including its length, diameter, and the number and distribution of spray holes 706, to ensure the best fire-fighting effect.

[0091] The pressure-opening valve 708 is installed on the second nozzle 707 to control its opening and closing. It automatically opens under a preset pressure, allowing fire-fighting fluid to be sprayed through the second nozzle 707. In emergencies such as fire or thermal runaway of the battery unit 2, the pressure of the fire-fighting fluid rises rapidly. When the preset value is reached, the pressure-opening valve 708 automatically opens, releasing a large amount of fire-fighting fluid for rapid cooling and fire extinguishing. When the fire-fighting demand is low or the fire has been initially controlled, the pressure of the fire-fighting fluid decreases, and the pressure-opening valve 708 automatically closes, reducing unnecessary waste of fire-fighting fluid. The addition of the pressure-opening valve 708 also improves the response speed and flexibility of the fire-fighting component 7, enabling it to respond more accurately to various fire situations.

[0092] In the aforementioned structure, by adding a second nozzle 707 and installing a pressure-activated valve 708, not only is the cooling and extinguishing efficiency of the fire-fighting component 7 improved, but unnecessary waste of fire-fighting fluids is also reduced. While enhancing the thermal runaway safety of the battery device 2 and the surrounding environment, it also achieves the technical effects of energy conservation, emission reduction, and extending the service life of the fire-fighting component 7.

[0093] In some embodiments of this application, there are multiple second nozzles 707, and multiple second nozzles 707 are alternately arranged with the first nozzle 705.

[0094] Alternating the second nozzle 707 with the first nozzle 705 improves the uniformity of fire-fighting fluid spraying and ensures uniform spraying of all battery cells 6 evenly when rapid cooling and low-flow fire-fighting fluid application are required. In the event of an emergency such as fire or thermal runaway in the battery unit 2, the second nozzle 707 can be quickly opened to release a large amount of fire-fighting fluid for rapid cooling and fire extinguishing; while when the fire-fighting demand is low or the fire has been initially controlled, the first nozzle 705 can continue to spray fire-fighting fluid at a low flow rate to ensure continuous cooling and protection of the battery cells 6.

[0095] The above structure, which alternates the second nozzle 707 with the first nozzle 705, ensures that fire-fighting liquid can be sprayed evenly onto all battery cells 6 when rapid cooling and low-flow fire-fighting liquid spraying are required, thereby improving the efficiency of cooling and fire extinguishing.

[0096] In some embodiments of this application, the pressure-activated valve 708 includes a cover plate 709, a fixing block 710, and an elastic element 711. The cover plate 709 covers the end of the second nozzle 707 away from the fire-fighting pipe 704. The fixing block 710 is disposed opposite to the cover plate 709 and is located inside the second nozzle 707. The two ends of the elastic element 711 are respectively connected to the cover plate 709 and the fixing block 710. Under the action of fluid in the fire-fighting pipe 704, the elastic element 711 can be stretched so that the cover plate 709 and the second nozzle 707 form a channel for fluid flow.

[0097] Optionally, the second nozzle 707 has an inlet end and an outlet end. The inlet end is connected to the fire-fighting pipeline 704 to input fire-fighting fluid into the second nozzle 707. The outlet end is positioned towards the battery cell 6 to spray fire-fighting fluid onto the battery cell 6. The radius of the cover plate 709 is larger than the port radius of the outlet end to seal the port. The cover plate 709 is movably connected to the outlet end via an elastic member 711 and a fixing block 710. The fixing block 710 is connected to the inner wall of the second nozzle 707, and there is a channel for fire-fighting fluid to flow between the fixing block 710 and the second nozzle 707. The elastic member 711 is preset with a pulling force to pull the cover plate 709 toward the fixing block 710. When the fluid pressure in the fire-fighting pipeline 704 is low, the cover plate 709 remains closed, effectively preventing the outflow of fire-fighting fluid, thereby reducing unnecessary waste.

[0098] In the aforementioned structure, the cover plate 709 closes when only a small flow of fire-fighting fluid is needed, reducing waste of the fluid. The fixing block 710 secures the elastic element 711 within the second nozzle 707. When rapid cooling and fire suppression are required, the water pressure of the fire-fighting fluid in the fire pipe 704 acts on the cover plate 709, stretching the elastic element 711. This separates the cover plate 709 from the second nozzle 707, creating a channel that opens the second nozzle 707. The opening and closing of the second nozzle 707 can be controlled by adjusting the water pressure within the fire pipe 704, offering simple operation, high control efficiency, and high precision.

[0099] like Figure 6 As shown, in some embodiments of this application, the fire-fighting component 7 further includes a fire extinguishing agent storage tank 712, which contains fire extinguishing agent and is connected to the inlet 703.

[0100] In the above structure, by setting up a fire extinguishing agent storage tank 712 to store a certain amount of fire extinguishing agent, it can be sprayed in time to cool and extinguish the fire on the battery cell 6 before the external fire extinguishing liquid enters the fire pipeline 704. It can control the small-scale thermal runaway in the battery device 2 in time, and provide a buffer time for subsequent fire extinguishing liquid replenishment, reduce the spread of thermal runaway of the battery cell 6, and improve the operational stability of the battery device 2.

[0101] In some embodiments of this application, the control assembly includes a first connecting pipe 713, a solenoid valve 714, and a control device. The first connecting pipe 713 connects the inlet 703 and the extinguishing agent storage tank 712, and the solenoid valve 714 is located between the extinguishing agent storage tank 712 and the inlet 703. The control device is electrically connected to the battery management system 8 and is used to receive control signals from the battery management system 8. The control device is connected to the solenoid valve 714 and controls the opening and closing of the solenoid valve 714 according to the control signals.

[0102] The first connecting pipe 713 is a component that connects the extinguishing agent storage tank 712 to the fire-fighting pipeline 704. The extinguishing agent can flow out from the storage tank when needed and be sprayed onto the battery cell 6 through the fire-fighting pipeline 704. The first connecting pipe 713 needs to be manufactured using materials with certain elasticity, structural strength, high temperature resistance, and corrosion resistance to ensure smooth flow of the extinguishing agent and meet fire-fighting requirements.

[0103] When the battery management system 8 detects an anomaly, it immediately sends a control signal to the control device. Upon receiving the signal, the control device quickly opens the solenoid valve 714, allowing the extinguishing agent to flow from the storage tank and be sprayed onto the battery cells 6 through the fire extinguishing pipe 704. This precise control helps improve the response speed and extinguishing efficiency of the fire extinguishing assembly 7. Compared to traditional mechanical control, the solenoid valve 714 has a faster response speed and higher reliability. The fire extinguishing assembly 7 can cool and extinguish the fire in the battery cells 6 in a shorter time, thereby reducing the risk of fire spread. Simultaneously, no manual intervention or additional operating steps are required. This reduces operational difficulty and cost, and improves the practicality and adoption rate of the fire extinguishing assembly 7.

[0104] In some optional embodiments, a one-way valve 724 is also provided on the first connecting pipe 713. The one-way valve 724 is located between the solenoid valve 714 and the inlet 703, which can reduce the backflow of liquid from the fire pipeline 704 into the extinguishing agent storage tank 712.

[0105] In some embodiments of this application, the control component includes a second connecting pipe 715 and a manual valve 716. The second connecting pipe 715 is connected between the inlet 703 and the extinguishing agent storage tank 712, and the manual valve 716 is located on the second connecting pipe 715.

[0106] The second connecting pipe 715 connects the inlet 703 of the fire-fighting assembly 7 to the extinguishing agent storage tank 712, forming a parallel structure with the first connecting pipe 713. This design allows the extinguishing agent to still be introduced into the fire escape route through the second connecting pipe 715 even if the solenoid valve 714 fails. The second connecting pipe 715 needs to be manufactured using materials with certain elasticity, structural strength, high-temperature resistance, and corrosion resistance to ensure smooth flow of the extinguishing agent and meet fire-fighting requirements.

[0107] A manual valve 716 is located on the second connecting pipe 715 and is used to control the flow of extinguishing agent through the second connecting pipe 715. Compared with the solenoid valve 714, the manual valve 716 has higher reliability and stability because it does not rely on electricity or other external energy sources. In an emergency, even if the solenoid valve 714 fails, the operator can still manually operate the valve to open or close the flow of extinguishing agent. This design improves the emergency response capability of the fire-fighting assembly 7.

[0108] Optionally, if the control of the solenoid valve 714 is not faulty, the second connecting pipe 715 can still be manually opened, increasing the maximum flow rate of the extinguishing agent and improving the efficiency of fire extinguishing.

[0109] For example, manual valve 716 includes any one of manual butterfly valve, manual gate valve, manual ball valve, and shut-off valve.

[0110] In the aforementioned structure, the redundancy design enhances the reliability of the fire-fighting assembly 7 by introducing a combination of a second connecting pipe 715 and a manual valve 716. Even in the event of a failure of the solenoid valve 714, the operator can still use the manual valve 716 to introduce extinguishing agent into the fire escape for cooling and fire suppression. This design ensures the effectiveness of the fire-fighting assembly 7 in emergency situations. The redundancy design increases the control channels for introducing extinguishing agent into the fire escape. Compared to single control by the solenoid valve 714, this design offers greater choice and flexibility. In an emergency, the operator can choose to use either the solenoid valve 714 or the manual valve 716 to control the flow of extinguishing agent, depending on the actual situation.

[0111] In some optional embodiments, the second connecting pipe 715 is also provided with a one-way valve, which is located between the manual valve 716 and the inlet 703, and can reduce the backflow of liquid from the fire pipe 704 into the extinguishing agent storage tank 712.

[0112] like Figure 6 as well as Figure 7 As shown, in some embodiments of this application, the control assembly further includes a valve operating mechanism 717, which includes a pressure rod 718, a transmission block 719, a connecting rod 720, and a rotating block 721. The transmission block 719 is connected to one end of the pressure rod 718 along a first direction X, and the connecting rod 720 is located on one side of the transmission block 719 along a second direction Y. The first direction X intersects with the second direction Y, and the connecting rod 720 is inclined towards the surface of the transmission block 719. The rotating block 721 is located at the end of the connecting rod 720 away from the transmission block 719, and is connected to a manual valve 716. Specifically, the movement of the pressure rod 718 towards the transmission block 719 causes the transmission block 719 to move along the first direction X, the transmission block 719 pushes the connecting rod 720 to move along the second direction, and the movement of the connecting rod 720 pushes the rotating block 721 to rotate, thereby opening the manual valve 716. By pressing the lever 718 with a finger or stepping on it, force is applied to the transmission block 719, causing the transmission block 719 to move and drive the connecting rod 720 to move. The movement of the connecting rod 720 pushes the rotating block 721 to rotate, and the rotation of the rotating block 721 opens the manual valve 716.

[0113] Optionally, the lever 718 can be located at the bottom of the vehicle 1, near the driver's foot control position, for easy control by the driver. The lever 718 can also be located in the manual control area of ​​the driver's seat for manual operation by pressing. By designing the length, diameter, and material of the lever 718, the operator can easily apply sufficient force to drive the entire mechanism.

[0114] The transmission block 719 is used to transmit the pressure of the pressure rod 718 to the connecting rod 720 and convert the pressing force in the first direction X into the pushing force in the second direction Y. For example, the second direction Y can be the normal driving direction of the vehicle 1, and the first direction X can be the height direction of the vehicle 1.

[0115] The linkage 720 is set along the normal driving direction of the vehicle 1, which makes up for the distance between the driver's seat and the battery device 2, allowing the operator to remotely open the valve from a certain distance away from the manual valve 716.

[0116] With the above-described structure, when the battery device 2 catches fire and emits smoke, the operator can maintain a safe distance to open the valve, thereby improving the efficiency of valve opening and ensuring the safety of the operator.

[0117] In some embodiments of this application, the fire-fighting component 7 further includes a telescopic pipe 722 and a one-way valve 723. One end of the telescopic pipe 722 is connected to the fire-fighting pipe 704, and the other end of the telescopic pipe 722 is used to connect to the fire-fighting water supply equipment. The one-way valve 723 is disposed between the telescopic pipe 722 and the fire-fighting pipe 704. The one-way valve 723 is used to restrict the flow of liquid in the fire-fighting pipe 704 from the fire-fighting interface to the telescopic pipe 722.

[0118] During normal use of the electrical equipment, the expansion joint 722 can be stored within the equipment's storage space. When a fire-fighting power supply is needed, the expansion joint 722 can be extended for connection to a fire truck or fire hydrant. The one-way valve 723 needs to have a certain pressure resistance, sealing performance, and flexibility in opening and closing. The presence of the one-way valve 723 prevents extinguishing agents and other liquids in the fire-fighting pipeline 704 from flowing back into the expansion joint 722, thus protecting the integrity of the fire-fighting water supply equipment. This design not only improves the fire-fighting efficiency of the fire-fighting system but also reduces potential risks caused by operational errors or equipment malfunctions.

[0119] In the above structure, by setting up the telescopic pipe 722 and the one-way valve 723, it is easy to connect to the external fire-fighting power supply, increase the flow rate of fire-fighting liquid, improve the speed of cooling and extinguishing fire, and reduce the damage caused by fire or high temperature.

[0120] In some optional embodiments, the battery device 2 includes battery cells 6, a housing 5, a control component, a fire extinguishing agent storage tank 712, and a fire-fighting component 7. The housing 5 houses the battery cells 6, and the fire-fighting component 7 is located on the side of the housing 5 opposite to the battery cells 6. The fire-fighting component 7 has a fire-fighting fluid flow channel 701 with an outlet 702 and an inlet 703. The inlet 703 connects to the fire-fighting agent storage tank 712, and the outlet 702 corresponds to the battery cell 6. The fire-fighting agent storage tank 712 contains fire-fighting agent and is connected to the inlet 703. The control component is connected to the inlet 703 and controls the connection and disconnection between the fire-fighting component 7 and the fire-fighting agent storage tank 712. The fire-fighting component 7 includes a fire-fighting pipe 704 and a first nozzle 705. The fire-fighting pipe 704 extends along the arrangement direction of the battery cells 6, and one end of the fire-fighting pipe 704 connects to a fire-fighting fluid supply source. Multiple first nozzles 705 are spaced apart along the extension direction of the fire extinguishing pipeline 704. Each first nozzle 705 has a spray hole 706 facing the battery cell 6. The fire extinguishing assembly 7 also includes a second nozzle 707 and a pressure-opening valve 708 on the second nozzle 707. The second nozzle 707 is connected to the fire extinguishing pipeline 704, and the pressure-opening valve 708 controls the opening and closing of the second nozzle 707. The pressure-opening valve 708 can open under a preset pressure. Multiple second nozzles 707 are arranged alternately with the first nozzles 705. The control assembly includes a first connecting pipe 713, a solenoid valve 714, and a control device. The first connecting pipe 713 connects the inlet 703 to the extinguishing agent storage tank 712, and the solenoid valve 714 is located between the extinguishing agent storage tank 712 and the inlet 703. The control device is electrically connected to the battery management system 8 and receives control signals from the battery management system 8. The control device is connected to the solenoid valve 714 and controls the opening and closing of the solenoid valve 714 according to the control signal. The control assembly includes a second connecting pipe 715 and a manual valve 716. The second connecting pipe 715 is connected between the inlet 703 and the extinguishing agent storage tank 712, and the manual valve 716 is located on the second connecting pipe 715.

[0121] This application provides an electrical device including the battery device 2 described in the above embodiments, which provides electrical energy. In this device, a fire-fighting component 7 is installed outside the housing 5. When the battery experiences thermal runaway, fire-fighting liquid can be introduced into the fire-fighting liquid channel 701 to cool and extinguish the battery device 2. The outlet 702 of the fire-fighting liquid channel 701 is positioned towards the battery cell 6, enabling precise cooling and extinguishing of the battery cell 6. This reduces the risk of fire spread due to the concealed installation location of the battery device 2, preventing the fire-fighting liquid from being accurately sprayed, thus achieving rapid and precise cooling and fire extinguishing. Simultaneously, the housing 5 of the battery device 2 and the electrical equipment in contact with it are cooled, delaying the rapid temperature increase of a single battery cell 6 due to thermal runaway, which could cause other battery devices 2 to smoke and catch fire. It also reduces the risk of other components connected to the electrical device catching fire due to heat, thus reducing casualties around the electrical device and slowing the spread of fire.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized by, The battery device comprises: a battery cell; a box for accommodating the battery cell; a fire-fighting assembly arranged on a side of the box away from the battery cell, the fire-fighting assembly is internally provided with a fire-fighting liquid flow channel, the fire-fighting liquid flow channel has an outlet and an inlet, the inlet is used for connecting a fire extinguishing agent storage tank, the outlet is arranged corresponding to the battery cell, the fire-fighting assembly further comprises a second spray pipe and a pressure-operated valve arranged on the second spray pipe, the pressure-operated valve is used for controlling the opening and closing of the second spray pipe, and the pressure-operated valve can be opened under the action of a preset pressure.

2. The battery device according to claim 1, characterized by The battery device further comprises a control assembly connected to the inlet, the control assembly is used for controlling the connection and disconnection between the fire-fighting assembly and the fire extinguishing agent storage tank.

3. The battery device of claim 2, wherein, The fire-fighting assembly comprises: a fire-fighting pipe extending along the arrangement direction of the battery cell, one end of the fire-fighting pipe is used for connecting the fire extinguishing agent storage tank, and the second spray pipe is connected to the fire-fighting pipe; a plurality of first spray pipes are arranged at intervals along the extension direction of the fire-fighting pipe, the first spray pipes are provided with spray holes, and the spray holes are arranged towards the battery cell.

4. The battery device of claim 3, wherein The fire-fighting pipe comprises any one of a metal hose, a corrugated pipe, a rubber pipe, a polyethylene pipe and a polypropylene pipe.

5. The battery device of claim 3, wherein The number of the second spray pipes is plural, and the second spray pipes are arranged alternately with the first spray pipes.

6. The battery device of claim 3, wherein The pressure-operated valve comprises: a cover plate covering one end of the second spray pipe away from the fire-fighting pipe; a fixed block arranged opposite to the cover plate, the fixed block is arranged in the second spray pipe; an elastic member having two ends connected to the cover plate and the fixed block respectively, the elastic member can be stretched under the action of fluid in the fire-fighting pipe to form a channel for fluid flow between the cover plate and the second spray pipe.

7. The battery device according to any one of claims 2 to 6, wherein The fire-fighting assembly further comprises a fire extinguishing agent storage tank, the fire extinguishing agent storage tank is internally provided with fire extinguishing agent, and the fire extinguishing agent storage tank is connected to the inlet.

8. The battery device of claim 7, wherein, The control assembly comprises: a first connecting pipe connected between the inlet and the fire extinguishing agent storage tank; a solenoid valve arranged between the fire extinguishing agent storage tank and the inlet; a control device electrically connected with a battery management system, used for receiving a control signal of the battery management system, the control device is connected with the solenoid valve and controls the opening and closing of the solenoid valve according to the control signal.

9. The battery device of claim 7, wherein, The control assembly comprises a second connecting pipe and a manual valve, the second connecting pipe is connected between the inlet and the fire extinguishing agent storage tank, and the manual valve is arranged on the second connecting pipe.

10. The battery device of claim 9, wherein, The control assembly further comprises a valve control mechanism, the valve control mechanism comprises: a pressure rod; a transmission block connected to one end of the pressure rod along a first direction; a connecting rod arranged on one side of the transmission block along a second direction, the first direction intersects with the second direction, and the connecting rod is arranged obliquely towards the surface of the transmission block; a rotating block arranged on one end of the connecting rod away from the transmission block, and the rotating block is connected with the manual valve, wherein the movement of the pressure rod towards the transmission block drives the transmission block to move along the first direction, the transmission block drives the connecting rod to move along the second direction, and the movement of the connecting rod drives the rotating block to rotate to drive the manual valve to open.

11. The battery device of any one of claims 1-6, wherein, The fire-fighting assembly further comprises a telescopic pipe, one end of which is connected to the fire-fighting pipe, the other end of which is used to connect a fire-fighting water supply device, and a one-way valve, which is arranged between the telescopic pipe and the fire-fighting pipe and is used to limit the flow of liquid in the fire-fighting pipe from the fire-fighting interface to the telescopic pipe.

12. An electrical device, characterized by The electric device comprises the battery device according to any one of claims 1-11, and the battery device is used to provide electricity.

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