Vehicle and control method

Abstract

The invention relates to the technical field of vehicles, provides a vehicle and a control method, and can improve the safety of the vehicle. The vehicle comprises an oil tank, an oxygen generator and a connecting assembly, the oil tank is provided with a containing cavity, and the containing cavity is used for storing fuel and supplying the fuel to an engine; the oxygen generator is provided with a first exhaust port and a second exhaust port, the first exhaust port is used for exhausting oxygen, and the second exhaust port is used for exhausting byproduct gas; the connecting assembly comprises a connecting pipeline, and the connecting pipeline is connected between the oxygen generator and the oil tank and used for communicating the second exhaust port with the containing cavity.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a vehicle and a control method thereof. Background Technology

[0002] In a vehicle's fuel system, the vapor space of the fuel tank is typically filled with air. Due to the high volatility of fuel, its vapor is continuously released and accumulates in this vapor space, mixing with air to form a flammable mixture. When exposed to unexpected triggers such as collisions, fuel leaks, electrostatic discharge, or high-temperature heat sources, this mixture can easily reach its combustion or explosion limits, potentially causing a fire or even a violent explosion, seriously threatening the safety of occupants. Summary of the Invention

[0003] To address the aforementioned technical problems, this application provides a vehicle and a control method that can improve vehicle safety.

[0004] In a first aspect, this application provides a vehicle including a fuel tank, an oxygen generator, and a connecting assembly. The fuel tank has a receiving cavity for storing fuel and supplying fuel to an engine. The oxygen generator has a first exhaust port and a second exhaust port, the first exhaust port for discharging oxygen and the second exhaust port for discharging by-product gas. The connecting assembly includes a connecting pipe that connects the oxygen generator and the fuel tank to communicate the second exhaust port and the receiving cavity.

[0005] The vehicle provided in this application includes a fuel tank, an oxygen generator, and a connecting assembly. During vehicle operation, the fuel tank supplies fuel to the engine. The oxygen generator, in addition to discharging oxygen from its first exhaust port for the occupants' breathing, also discharges a byproduct gas from its second exhaust port. This byproduct gas is essentially an inert gas, containing almost no flammable components. The connecting assembly's connecting pipes connect the oxygen generator's second exhaust port to the fuel tank's containment cavity, allowing the byproduct gas discharged from the oxygen generator to be introduced into the fuel tank via the connecting pipes. This dilutes and replaces the original air in the fuel tank, effectively reducing the oxygen concentration and thus lowering the probability of combustion or explosion. The solution provided in this application transforms the byproduct gas that would otherwise be emitted into the external environment during oxygen generation into a key medium for fuel tank safety protection. It eliminates the need for an additional independent inerting device, simultaneously achieving inerting of the air inside the fuel tank on top of the onboard oxygen generation function. This improves the vehicle's intrinsic safety level under extreme conditions such as collisions, leaks, and high temperatures, and also achieves the synergistic utilization of onboard resources and the integrated optimization of system functions.

[0006] In some implementations, the vehicle includes a detection device and a controller. The detection device is used to acquire safety information characterizing the vehicle's safety status, and the controller is communicatively connected to the detection device. The controller is configured to control the by-product gas discharged from the oxygen generator to be introduced into the receiving cavity when the safety information meets preset triggering conditions.

[0007] In some implementations, safety information includes the oxygen concentration in the containment cavity. The detection device includes an oxygen concentration detector disposed in the containment cavity. The oxygen concentration detector is used to detect the oxygen concentration in the containment cavity. When the oxygen concentration in the containment cavity is greater than or equal to a first preset threshold, the controller controls the by-product gas discharged from the oxygen generator to be introduced into the containment cavity.

[0008] In some implementations, the safety information includes vehicle collision information, and the detection device includes a collision detection structure installed on the vehicle body. The collision detection structure is used to detect the vehicle's collision information. In the event of a vehicle collision, the controller controls the by-product gas discharged from the oxygen generator to be introduced into the receiving cavity.

[0009] In some implementations, the connection component also includes a first control valve, which is disposed in the connection pipeline. The controller is communicatively connected to the first control valve. When the safety information meets the preset triggering conditions, the controller outputs a control signal to control the first control valve to open, so as to connect the connection pipeline.

[0010] In some implementations, the connecting assembly also includes an air storage component with an air storage chamber. The air inlet of the air storage chamber is connected to a second exhaust port through a connected pipeline, and the air outlet of the air storage chamber is connected to a receiving chamber through a connecting pipeline. A first control valve is located between the air outlet of the air storage chamber and the receiving chamber.

[0011] In some implementations, the oxygen generator includes an exhaust pipe and a second control valve. One end of the exhaust pipe is connected to the outlet of the gas storage chamber, and the other end of the exhaust pipe is connected to the external environment. The second control valve is located in the exhaust pipe. The vehicle also includes a pressure detection structure located inside the gas storage chamber. The pressure detection structure is used to detect the pressure inside the gas storage chamber.

[0012] In some implementations, the controller is connected to the oxygen generator in communication. When the safety information meets the preset trigger conditions, the controller outputs a control signal to control the oxygen generator to turn on, so that the oxygen generator can discharge oxygen and by-product gases.

[0013] In some implementations, the vehicle also includes a cooling structure, at least partially disposed along an extension of the connecting pipe, for exchanging heat with byproduct gases within the connecting pipe.

[0014] Secondly, this application provides a control method applied to the vehicle of the first aspect. The control method includes: turning on the oxygen generator to discharge oxygen and by-product gas; and controlling the by-product gas discharged by the oxygen generator to be introduced into the receiving cavity of the fuel tank through a connecting pipeline.

[0015] In the control method of this application, since it is applied to the vehicle of the first aspect, the same beneficial effect can be achieved. That is, the safety of the vehicle can be improved.

[0016] In some implementations, the vehicle includes a detection device and a controller, with the controller communicatively connected to the detection device. The step of controlling the by-product gas discharged from the oxygen generator to be introduced into the reservoir cavity of the fuel tank through a connecting pipe includes: activating the detection device to obtain safety information characterizing the vehicle's safety status; and, if the safety information meets preset triggering conditions, controlling the by-product gas discharged from the oxygen generator to be introduced into the reservoir cavity of the fuel tank through the connecting pipe.

[0017] In some implementations, the safety information includes the oxygen concentration in the containment cavity, the detection device includes an oxygen concentration detector, and the preset triggering condition includes the oxygen concentration in the containment cavity being greater than or equal to a first preset threshold.

[0018] In some implementations, safety information includes vehicle collision information, the detection device includes a collision detection structure, and the preset triggering condition includes a vehicle collision.

[0019] In some implementations, the connection assembly also includes a first control valve, which is disposed in the connection pipeline and is communicatively connected to the controller. When the safety information meets the preset triggering conditions, the controller controls the first control valve to open and connect the connection pipeline so that the by-product gas discharged from the oxygen generator is introduced into the receiving cavity of the oil tank through the connection pipeline.

[0020] In some implementations, the connecting assembly also includes a gas storage device disposed in the connecting pipeline. Before the step of controlling the by-product gas discharged from the oxygen generator to be introduced into the receiving cavity of the oil tank through the connecting pipeline, the control method further includes: controlling the by-product gas discharged from the oxygen generator to be introduced into the gas storage device through the connecting pipeline. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is one of the schematic diagrams showing the connection between the fuel tank and the oxygen generator in a vehicle provided in the embodiments of this application; Figure 2A second schematic diagram illustrating the connection between the fuel tank and the oxygen generator in a vehicle, provided in an embodiment of this application. Figure 3 This is a schematic diagram showing the connection between the detection device and the controller in a vehicle according to an embodiment of this application; Figure 4 One of the flowcharts for the control method provided in the embodiments of this application; Figure 5 A second flowchart of the control method provided in the embodiments of this application; Figure 6 The third flowchart of the control method provided in the embodiments of this application; Figure 7 The fourth flowchart is a control method provided in the embodiments of this application.

[0024] Explanation of reference numerals in the attached figures: 1-Fuel tank; 2-Oxygen generator; 3-Connecting assembly; 31-Connecting pipeline; 32-First control valve; 33-Gas storage unit; 34-Exhaust pipeline; 35-Second control valve; 4-Detection device; 41-Oxygen concentration detection unit; 42-Collision detection structure; 5-Controller; 6-Engine; 7-Terminal; 8-External environment; 9-Filter element. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0027] 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.

[0028] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" 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.

[0029] 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.

[0030] 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 are in an "or" relationship.

[0031] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., 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 do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0032] 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0033] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0034] The following is a detailed description of this application.

[0035] In a vehicle's fuel system, the vapor space of the fuel tank is typically filled with air. Due to the high volatility of fuel, its vapor is continuously released and accumulates in this vapor space, mixing with air to form a flammable mixture. When exposed to unexpected triggers such as collisions, fuel leaks, electrostatic discharge, or high-temperature heat sources, this mixture can easily reach its combustion or explosion limits, potentially causing a fire or even a violent explosion, seriously threatening the safety of occupants.

[0036] To address the aforementioned issues and effectively reduce the probability of fuel tank combustion or explosion, the key lies in suppressing the formation of a flammable environment within the vapor phase space. Since the mixing of fuel vapor and oxygen is a prerequisite for combustion and explosion, actively reducing the oxygen concentration in the fuel tank's vapor phase space to below the critical value supporting combustion can effectively reduce the likelihood of combustion and explosion.

[0037] Therefore, referring to Figure 1 , Figure 2 and Figure 3 This application provides a vehicle, which includes a fuel tank 1, an oxygen generator 2, and a connecting assembly 3. The fuel tank 1 has a receiving cavity for storing fuel and supplying fuel to an engine 6. The oxygen generator 2 has a first exhaust port and a second exhaust port. The first exhaust port is used to discharge oxygen, and the second exhaust port is used to discharge by-product gas. The connecting assembly 3 includes a connecting pipe 31, which is connected between the oxygen generator 2 and the fuel tank 1 to connect the second exhaust port and the receiving cavity.

[0038] The vehicles provided in this application may be classified by purpose as passenger cars, commercial vehicles, special-purpose vehicles, high-altitude vehicles, etc.; and by power type as fuel-powered vehicles, hybrid vehicles, range-extended electric vehicles, etc.

[0039] The fuel tank 1 has a containment cavity for storing fuel and supplying fuel to the engine 6. This means that the fuel tank 1 has a closed containment cavity inside for holding liquid fuel (such as gasoline, diesel, etc.). This containment cavity serves as both a fuel storage container and a fuel pump and fuel pipeline to deliver fuel to the combustion chamber of the engine 6 to support the vehicle's power output.

[0040] The reservoir of fuel tank 1 is divided into a liquid phase zone (the area where liquid fuel is stored) and a gas phase space (the gas area above the liquid fuel) in the working state.

[0041] Oxygen generator 2 refers to the on-board oxygen generating device. When oxygen generator 2 is operating, it draws in air from the external environment 8 through filter 9 and separates oxygen from the air using technologies such as molecular sieve pressure swing adsorption. The oxygen is then discharged through the first exhaust port to terminal 7 for the occupants' breathing. It should be noted that terminal 7 can be an oxygen output interface or a gas-using device connected to the first exhaust port. Simultaneously with the separation of oxygen, oxygen generator 2 also discharges byproduct gas (usually an inert gas primarily composed of nitrogen) through the second exhaust port.

[0042] In addition, the filter 9 of the oxygen concentrator 2 can be shared with the vehicle's air conditioning dust filter (or particulate filter). On the one hand, this design helps to improve the integration level of the vehicle and reduce the number of parts; on the other hand, it effectively reduces hardware costs and assembly complexity through functional reuse, thereby achieving cost savings.

[0043] The connecting component 3 includes a connecting pipe 31, which is connected between the oxygen generator 2 and the oil tank 1. Specifically, the inlet end of the connecting pipe 31 is connected to the exhaust outlet of the oxygen generator 2, and the outlet end of the connecting pipe 31 is connected to the receiving cavity of the oil tank 1, so as to guide the by-product gas discharged from the oxygen generator 2 into the receiving cavity of the oil tank 1.

[0044] The vehicle provided in this embodiment includes a fuel tank 1, an oxygen generator 2, and a connecting assembly 3. During vehicle operation, the fuel tank 1 supplies fuel to the engine 6. The oxygen generator 2, in addition to discharging oxygen from its first exhaust port for the occupants' breathing, also discharges a byproduct gas from its second exhaust port. This byproduct gas is essentially an inert gas, containing almost no flammable components. The connecting pipe 31 of the connecting assembly 3 connects the second exhaust port of the oxygen generator 2 to the receiving cavity of the fuel tank 1, allowing the byproduct gas discharged by the oxygen generator 2 to be introduced into the fuel tank 1 via the connecting pipe 31 to dilute and replace the original air in the fuel tank 1, thereby effectively reducing the oxygen concentration in the fuel tank 1 and thus reducing the probability of combustion or explosion. The solution provided in this application transforms the by-product gas that was originally emitted into the external environment 8 during the oxygen production process into a key medium for the safety protection of the fuel tank 1. Without the need for an additional independent inerting device, the air inside the fuel tank 1 can be inerted simultaneously on the basis of the vehicle's oxygen production function, thereby improving the inherent safety level of the vehicle under extreme conditions such as collisions, leaks, and high temperatures. Moreover, it realizes the coordinated utilization of vehicle resources and the integrated optimization of system functions.

[0045] Reference Figure 1 , Figure 2 and Figure 3In some embodiments of this application, the vehicle includes a detection device 4 and a controller 5. The detection device 4 is used to acquire safety information characterizing the safety status of the vehicle. The controller 5 is communicatively connected to the detection device 4 and is configured to control the by-product gas discharged from the oxygen generator 2 to be introduced into the receiving cavity when the safety information meets a preset triggering condition.

[0046] The detection device 4 is used to acquire safety information characterizing the vehicle's safety status. This means that the detection device 4 collects multi-dimensional status parameters closely related to vehicle operation safety in real time, serving as the basis for determining whether to activate inerting protection. Here, safety information may include vehicle collision signals, the temperature of the fuel tank 1 wall or interior, the internal vapor pressure of the fuel tank 1, fuel leakage signals, vehicle attitude information, etc. The above information can be used individually or in combination to improve the accuracy of safety judgments.

[0047] The controller 5 is communicatively connected to the detection device 4. The controller 5 is configured to control the by-product gas discharged from the oxygen generator 2 to be introduced into the receiving cavity when the safety information meets preset trigger conditions. Specifically, the controller 5 is communicatively connected to the detection device 4 to receive the safety information acquired by the detection device 4. The controller 5 has preset safety risk trigger conditions. When any preset trigger condition is met, the controller 5 issues a control command to introduce the by-product gas discharged from the oxygen generator 2 into the receiving cavity of the oil tank 1.

[0048] It should be noted that controller 5 can be the vehicle's electronic control unit (ECU) or a separate dedicated safety control module, which can be configured according to requirements.

[0049] Here, the vehicle can acquire safety information characterizing its safety status through the detection device 4. The controller 5 dynamically evaluates this information based on preset safety risk triggering conditions. Once any risk indicator reaches a critical threshold (e.g., a collision occurs or the oxygen concentration exceeds the limit), the controller 5 immediately issues a command to introduce the by-product gas generated during the operation of the oxygen generator 2 into the fuel tank 1. This by-product gas, as an inert medium, can quickly dilute and replace the oxygen-containing air in the gas phase space of the fuel tank 1, reducing the oxygen concentration below the lower combustion limit, thereby fundamentally destroying the necessary conditions for fuel vapor combustion or explosion.

[0050] Of course, in some embodiments, a manual switch can also be installed on the vehicle. When the driver or operator senses a high-risk scenario (such as entering a high-temperature environment or off-road section), they can actively press the switch to connect the by-product gas to the fuel tank 1.

[0051] Reference Figure 1 , Figure 2 and Figure 3In some embodiments of this application, safety information includes the oxygen concentration in the containment cavity. The detection device 4 includes an oxygen concentration detection element 41, which is disposed in the containment cavity. The oxygen concentration detection element 41 is used to detect the oxygen concentration in the containment cavity. When the oxygen concentration in the containment cavity is greater than or equal to a first preset threshold, the controller 5 controls the by-product gas discharged from the oxygen generator 2 to be introduced into the containment cavity.

[0052] The above solution refers to the following: An oxygen concentration detector 41 is installed inside the containment cavity of the vehicle fuel tank 1 to monitor the oxygen concentration in the containment cavity in real time. The oxygen concentration detector 41 transmits the acquired oxygen concentration data to the controller 5. The controller 5 has a preset first preset threshold that is directly related to combustion safety. When the oxygen concentration in the containment cavity is detected to be greater than or equal to the threshold, the controller 5 automatically issues a command to control the by-product gas generated by the oxygen generator 2 during the oxygen supply process to be introduced into the containment cavity through the connecting pipe 31 to dilute and replace the air in the fuel tank 1.

[0053] It should be noted that the first preset threshold is usually set to a safety margin value that is lower than the critical oxygen concentration that supports combustion. This setting can trigger the inerting response before the oxygen concentration in the fuel tank 1 reaches the lower flammability limit, thereby preventing the vehicle from burning or exploding under the influence of potential ignition sources such as high temperature, electrostatic discharge, mechanical sparks or collisions.

[0054] In addition, there are many possible designs for the oxygen concentration detection element 41. For example, the oxygen concentration detection element 41 can be an electrochemical oxygen sensor or a paramagnetic oxygen sensor. This application does not limit the specific design of the oxygen concentration detection element 41.

[0055] Because volatile fuels such as gasoline evaporate into flammable vapors in fuel tank 1, combustion or explosion can easily occur if the oxygen concentration is within the flammable range and encounters an ignition source. This solution uses the oxygen concentration in fuel tank 1 as a trigger criterion to accurately detect the risk of combustion or explosion in fuel tank 1. When the oxygen concentration in fuel tank 1 approaches a dangerous level, i.e., when the oxygen concentration in fuel tank 1 is greater than or equal to a first preset threshold, the controller 5 can control the by-product gas discharged from the oxygen generator 2 to be introduced into fuel tank 1, reducing the oxygen concentration in fuel tank 1 to below the first preset threshold, thereby disrupting combustion conditions at the source and improving vehicle safety.

[0056] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments of this application, the safety information includes vehicle collision information. The detection device 4 includes a collision detection structure 42, which is disposed on the vehicle body. The collision detection structure 42 is used to detect the vehicle collision information. In the event of a vehicle collision, the controller 5 controls the by-product gas discharged from the oxygen generator 2 to be introduced into the receiving cavity.

[0057] The above scheme refers to the following: The vehicle body is equipped with a collision detection structure 42, which is used to sense whether the vehicle has collided in real time and generate corresponding collision information. The collision detection structure 42 is connected to the controller 5. When a collision is detected, that is, when the safety information meets the preset trigger conditions, the controller 5 can automatically issue a command to control the by-product gas generated by the oxygen generator 2 during the oxygen supply process to be introduced into the oil tank 1 through the connecting pipe 31 to dilute and replace the air in the oil tank 1.

[0058] It should be noted that the specific implementation of the collision detection structure 42 can be varied and can be flexibly selected according to the vehicle platform, functional safety requirements, and sensor configuration strategy. For example, the collision detection structure 42 may include an acceleration sensor to detect changes in the vehicle's deceleration during a collision; alternatively, the collision detection structure 42 may include a pressure sensing element, which can be located in the door cavity or front longitudinal beam to sense instantaneous pressure fluctuations caused by the collision; or, the collision detection structure 42 may include active safety sensors based on environmental perception, such as millimeter-wave radar, cameras, or ultrasonic sensors. The aforementioned collision detection structure 42 can be used individually or in combination to collaboratively determine the occurrence and severity of a collision event, thereby providing the controller 5 with highly reliable collision information.

[0059] In vehicle collisions, fuel tank 1 is highly susceptible to structural damage, fuel leakage, or vapor escape, creating a flammable environment. Simultaneously, mechanical sparks, electrical short circuits, or high-temperature components generated by the collision can become ignition sources, easily leading to fires or explosions and causing secondary injuries. This solution uses the collision event itself as a preset trigger condition. Within a very short time after the collision, controller 5 automatically activates the inerting protection mechanism, introducing byproduct gas from oxygen generator 2 into fuel tank 1, effectively diluting the oxygen concentration below the lower flammability limit, thereby improving vehicle safety.

[0060] Of course, in some embodiments, the safety information may also include the internal temperature of the fuel tank 1. Accordingly, the detection device 4 may include a temperature detection element disposed within the containment cavity of the fuel tank 1 or near its inner wall, for real-time monitoring of the internal temperature of the fuel tank 1. When the internal temperature of the fuel tank 1 is detected to be greater than or equal to a third preset threshold, the controller 5 controls the by-product gas discharged from the oxygen generator 2 to be introduced into the fuel tank 1.

[0061] It should be noted that the third preset threshold can be set as a safety margin value below the critical temperature at which fuel vapor volatilization significantly increases and the flammability risk in the gas phase space of fuel tank 1 significantly increases. Setting the third preset threshold in this range can trigger the inerting protection mechanism in advance when the high temperature risk first appears. By introducing by-product gas to dilute the oxygen concentration, the formation of a flammable environment can be effectively suppressed, thereby improving the safety of the vehicle.

[0062] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments of this application, the connecting component 3 further includes a first control valve 32, which is disposed in the connecting pipeline 31. The controller 5 is communicatively connected to the first control valve 32. When the safety information meets the preset triggering conditions, the controller 5 outputs a control signal to control the first control valve 32 to open, so as to connect the connecting pipeline 31.

[0063] The above scheme refers to the following: A first control valve 32 is installed on the connecting pipe 31 connecting the oxygen generator 2 and the oil tank 1. The first control valve 32 serves as the actuating component of the connecting assembly 3, and its opening and closing state directly controls whether the by-product gas can flow into the oil tank 1. The controller 5 is communicatively connected to the first control valve 32 and receives safety information from the detection device 4 in real time. When the safety information meets the preset triggering conditions, the controller 5 outputs a control signal to control the first control valve 32 to open, thereby opening the connecting pipe 31 and allowing the by-product gas discharged from the oxygen generator 2 to be introduced into the receiving cavity of the oil tank 1, thereby achieving inerting protection of the gas phase space inside the oil tank 1.

[0064] It should be noted that the first control valve 32 can be a mature solenoid valve or pneumatic valve, which is reliable in structure, low in cost, and easy to integrate with the vehicle's electronic architecture.

[0065] Under normal vehicle operation, the first control valve 32 remains closed. This prevents the byproduct gas generated by the oxygen generator 2 from being ineffectively introduced into the fuel tank 1, and also prevents interference with the internal pressure balance of the fuel tank 1 due to continuous ventilation. When a real safety risk is detected (i.e., the safety information meets the preset trigger conditions), the controller 5 immediately controls the first control valve 32 to open, allowing the byproduct gas to be injected into the fuel tank 1 at the most needed moment, thereby improving the timeliness of the inerting response and the effectiveness of safety protection. This design effectively reduces system energy consumption and operational complexity, avoiding unnecessary gas flow and valve actions. On the other hand, it also avoids the negative pressure problem in the fuel tank 1 that may be caused by continuous inerting, thus balancing reliability, safety, and long-term operational stability.

[0066] Of course, in some embodiments, the connecting component 3 may also include a mechanically triggered breaking structure, which includes a sealing membrane, a striking pin, and a driving component. The sealing membrane is disposed in the connecting pipe 31. The controller 5 is communicatively connected to the driving component. When the safety information meets the preset triggering conditions, the controller 5 outputs a control signal to control the driving component to drive the striking pin to puncture the sealing membrane in the connecting pipe 31, so as to open the passage of by-product gas to the oil tank 1.

[0067] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments of this application, the connecting component 3 further includes an air storage component 33, which has an air storage chamber. The air inlet of the air storage chamber is connected to the second exhaust port through the connected pipe 31, and the air outlet of the air storage chamber is connected to the receiving chamber through the connecting pipe 31. The first control valve 32 is located between the air outlet of the air storage chamber and the receiving chamber.

[0068] The above-mentioned solution refers to the following: A gas storage component 33 is added to the connecting assembly 3 connecting the oxygen generator 2 and the oil tank 1. This gas storage component 33 has a gas storage chamber inside. The inlet of the gas storage chamber is connected to the second exhaust port of the oxygen generator 2 via a connecting pipe 31, used to receive and temporarily store the by-product gas generated during oxygen production. Simultaneously, the outlet of the gas storage chamber is connected to the receiving cavity of the oil tank 1 via another connecting pipe 31, and a first control valve 32 is installed on the pipe between the outlet and the receiving cavity. This first control valve 32 is controlled by the controller 5. During the operation of the oxygen generator 2, the by-product gas is continuously or intermittently introduced into the gas storage chamber for accumulation and storage. When the safety information obtained by the detection device 4 (such as a collision signal, excessive oxygen concentration, or abnormal temperature) meets the preset triggering conditions, the controller 5 outputs a signal to open the first control valve 32, causing the pre-stored inert gas in the gas storage chamber to be rapidly released and injected into the oil tank 1, thereby achieving rapid inerting of the gas phase space inside the oil tank 1.

[0069] Safety incidents are sudden and instantaneous. By pre-accumulating by-product gas in the gas storage chamber 33, sufficient inert gas can be provided immediately after an accident, effectively improving response speed and protection timeliness. In addition, this structure also enhances the vehicle's fault tolerance under extreme conditions: even if a collision causes the oxygen generator 2 to lose power or the pipeline to be damaged, the inert gas stored in the gas storage chamber can still independently complete the inerting process, preventing the loss of protection function due to the interruption of the oxygen generator 2's gas supply.

[0070] Reference Figure 1 , Figure 2 and Figure 3 In some embodiments of this application, the oxygen generator 2 includes an exhaust pipe 34 and a second control valve 35. One end of the exhaust pipe 34 is connected to the outlet of the gas storage chamber, and the other end of the exhaust pipe 34 is connected to the external environment 8. The second control valve 35 is disposed in the exhaust pipe 34. The vehicle also includes a pressure detection structure disposed in the gas storage chamber. The pressure detection structure is used to detect the pressure in the gas storage chamber.

[0071] The technical solution refers to the following: To prevent abnormal pressure rise in the gas storage chamber of the gas storage component 33, the oxygen generator 2 also includes an exhaust pipe 34 and a second control valve 35. One end of the exhaust pipe 34 is connected to the outlet of the gas storage chamber, and the other end is connected to the external environment 8. The second control valve 35 is installed on the exhaust pipe 34. At the same time, the vehicle is also equipped with a pressure detection structure (such as a pressure sensor), which is set inside the gas storage chamber to monitor the pressure in the gas storage chamber in real time. When the pressure in the gas storage chamber is detected to be greater than or equal to the safety upper limit, the second control valve 35 is opened to open the exhaust pipe 34, thereby venting excess gas to the external environment 8 and realizing pressure release.

[0072] It should be noted that the second control valve 35 can be opened manually; or, the controller 5 is connected to the pressure detection structure and has a preset second preset threshold (i.e., the upper limit of safety). When the pressure in the gas storage chamber is greater than or equal to the second preset threshold, the controller 5 automatically outputs a control signal to control the second control valve 35 to open, thereby opening the exhaust pipe 34.

[0073] Because by-product gas is continuously injected into the gas storage chamber while the oxygen generator 2 is operating, if the pressure inside the gas storage chamber continues to rise due to the first control valve 32 being closed for an extended period, a sudden increase in ambient temperature, or excessively rapid gas accumulation, it may cause pipeline leaks, seal failure, or even structural damage to the gas storage component 33. By setting up an exhaust pipe 34 and a second control valve 35, the gas can be vented before the pressure inside the gas storage chamber reaches a dangerous critical point, avoiding the risk of overpressure. In addition, under non-overpressure conditions, the second control valve 35 remains closed to ensure that sufficient pressure is maintained in the gas storage chamber to support subsequent inerting of the oil tank 1.

[0074] In some embodiments of this application, the controller 5 is communicatively connected to the oxygen generator 2. When the safety information meets the preset triggering conditions, the controller 5 outputs a control signal to control the oxygen generator 2 to turn on, so that the oxygen generator 2 discharges oxygen and by-product gas.

[0075] The above scheme refers to the controller 5 establishing a communication connection with the oxygen generator 2 and being able to send start and stop commands to the oxygen generator 2; when the oxygen generator 2 is in the off state and the safety information obtained by the detection device 4 meets the preset safety risk triggering conditions, the controller 5 will actively control the oxygen generator 2 to start running and simultaneously discharge oxygen and by-product gas, wherein the by-product gas is introduced into the oil tank 1 through the connecting component 3 for inerting protection.

[0076] Here, controller 5 is communicatively connected to oxygen generator 2, achieving deep integration of vehicle safety protection functions and oxygen generation functions. Even if the vehicle's oxygen generation function is not originally activated, in the event of a safety risk event, controller 5 can automatically start oxygen generator 2 to ensure sufficient by-product gas is available for inerting fuel tank 1, avoiding the problem of insufficient by-product gas supply due to oxygen generator 2 being in a stopped state. In addition, this on-demand start mechanism takes into account both energy efficiency and safety. When there is no risk, oxygen generator 2 remains off, saving energy and extending equipment life; when a risk occurs, oxygen generator 2 is immediately activated to ensure timely protection. More importantly, in certain extreme scenarios (such as sudden accidents at high altitudes, fires in confined spaces, etc.), the synchronously discharged oxygen can also provide respiratory support for occupants, realizing the dual function of fuel tank 1 inerting and life rescue.

[0077] In some embodiments of this application, the vehicle further includes a cooling structure, at least partially disposed on an extension path of the connecting pipe 31, the cooling structure being used for heat exchange with by-product gases within the connecting pipe 31.

[0078] The technical solution refers to the following: a cooling structure is provided in the vehicle, and at least a part of the cooling structure is arranged on the extension path of the connecting pipe 31 connecting the oxygen generator 2 and the fuel tank 1, so that the by-product gas discharged from the oxygen generator 2 and flowing through the connecting pipe 31 can exchange heat with the cooling structure during the transportation process, thereby reducing its temperature before entering the containment cavity of the fuel tank 1.

[0079] It should be noted that the structural design of the cooling structure has various possibilities. For example, the cooling structure can be an existing thermal management system component on the vehicle, such as the air conditioning evaporator pipes, battery cooling circuit, and engine radiator bypass branch. By rationally arranging the connecting pipes 31 to pass through the low-temperature areas of these cooling structures, the by-product gases can be passively or actively cooled using existing cold sources. Alternatively, the cooling structure can also be designed as a heat exchanger for the heating system, with the high-temperature by-product gases designed to flow through the heat exchanger. In this way, while reducing the temperature of the by-product gases, waste heat can be utilized, improving the overall energy efficiency of the vehicle.

[0080] Because the temperature of the by-product gas often rises during the operation of the oxygen generator 2 due to compression, throttling, or internal friction, directly introducing the high-temperature by-product gas into the fuel tank 1 may pose the following risks: Firstly, the high-temperature by-product gas will exacerbate the evaporation of gasoline and fuel, increasing the concentration of combustible vapors in the gas phase space of the fuel tank 1; secondly, the high-temperature by-product gas may push up the local temperature inside the fuel tank 1, weakening its safety protection capabilities. By integrating a cooling structure into the connecting pipe 31, the temperature of the by-product gas can be effectively reduced, allowing it to enter the fuel tank 1 in a low-temperature, high-density state. This not only improves the replacement efficiency and dilution capacity of the by-product gas per unit volume but also inhibits fuel evaporation and stabilizes the internal thermal environment of the fuel tank 1.

[0081] Furthermore, this application also provides a control method applied to the vehicle described in the above embodiments, referring to... Figure 4 , Figure 4 A flowchart of a control method provided in an embodiment of this application is included. The control method includes: S100, turn on oxygen generator 2 so that oxygen generator 2 can discharge oxygen and by-product gas; S300, the by-product gas discharged from the oxygen generator 2 is controlled to be introduced into the receiving cavity of the oil tank 1 through the connecting pipe 31.

[0082] In this embodiment, a control method for controlling the vehicle in any of the above embodiments is proposed. Therefore, the control method has the advantages of the vehicle in any of the above technical solutions and can achieve the technical effects that the vehicle in any of the above embodiments can achieve. To avoid repetition, it will not be described again here.

[0083] In S100, the oxygen generator 2 can be turned on manually or automatically. In manual mode, the driver or passengers can actively start the oxygen generator 2 by operating a physical switch, touch screen control, voice command, or other human-machine interface. In automatic mode, the vehicle controller 5 automatically sends a start signal to turn on the oxygen generator 2 when certain conditions are met. These conditions include, but are not limited to: detecting that the vehicle is in a high-altitude area (such as when the atmospheric oxygen concentration is lower than a preset value), receiving physiological signals of hypoxia from passengers (such as abnormal heart rate or blood oxygen saturation monitored by cabin sensors), identifying safety risk events (such as a vehicle collision, excessive temperature or oxygen concentration in the fuel tank 1), or triggering according to a preset operating strategy (such as timed start, remote command, etc.).

[0084] In S300, the control process also supports both manual and automatic modes. In manual mode, after the oxygen generator 2 is running, the user can use an independent operating element to open the passage from the by-product gas to the oil tank 1; in automatic mode, the vehicle's controller 5 can determine whether to perform the import operation based on preset logic.

[0085] Here, the by-product gas generated by the oxygen generator 2 can be guided and introduced into the gas phase space inside the fuel tank 1 through the connecting pipe 31, which can effectively dilute and replace the original air, reduce the oxygen concentration inside the fuel tank 1, and thus reduce the probability of the fuel tank 1 burning or exploding.

[0086] In some implementations, refer to Figure 3 The vehicle includes a detection device 4 and a controller 5, with the controller 5 communicatively connected to the detection device 4, as shown in the reference. Figure 5 The steps for controlling the by-product gas discharged from oxygen generator 2 to be introduced into the receiving cavity of oil tank 1 through connecting pipe 31 include: S301: Activate detection device 4 to obtain safety information characterizing the vehicle's safety status; S302: When the safety information meets the preset triggering conditions, the controller 5 controls the by-product gas discharged from the oxygen generator 2 to be introduced into the receiving cavity of the oil tank 1 through the connecting pipe 31.

[0087] In S301, the detection device 4 may include, but is not limited to, an oxygen concentration sensor, a temperature sensor, a pressure sensor, an acceleration sensor, a fuel leak detection unit, a vehicle attitude sensor, radar, or a camera. The detection device 4 is configured to collect multi-dimensional parameters closely related to vehicle operating safety in real time; these parameters constitute safety information. The detection device 4 can be automatically activated after the vehicle starts, or it can be selectively activated according to system strategies (such as entering high-altitude areas, receiving remote commands, or being manually triggered by the user), ensuring that safety information characterizing the vehicle's safety status can be provided when needed.

[0088] In S302, the controller 5 is communicatively connected to the detection device 4 to receive and analyze the acquired safety information. The controller 5 has preset trigger conditions related to the risk of combustion and explosion. When any trigger condition is met, the controller 5 automatically outputs a control signal to open the passage of by-product gas to the oil tank 1, so that the by-product gas generated during the oxygen production process flows into the oil tank 1, diluting the oxygen concentration in the oil tank 1 and inhibiting the formation of a flammable environment.

[0089] Here, the vehicle can acquire safety information characterizing its safety status through the detection device 4. The controller 5 dynamically evaluates this information based on preset safety risk triggering conditions. Once any risk indicator reaches a critical threshold (e.g., a collision occurs or the oxygen concentration exceeds the limit), the controller 5 immediately issues a command to introduce the nitrogen-based byproduct gas generated during the operation of the oxygen generator 2 into the containment cavity of the fuel tank 1. This byproduct gas, as an inert medium, can quickly dilute and replace the oxygen-containing air in the gas phase space of the fuel tank 1, reducing the oxygen concentration below the lower combustion limit, thereby fundamentally destroying the necessary conditions for fuel vapor combustion or explosion.

[0090] Reference Figure 6 In some implementations, the safety information includes the oxygen concentration in the containment cavity, the detection device 4 includes an oxygen concentration detection element 41, and the preset triggering condition includes the oxygen concentration in the containment cavity being greater than or equal to a first preset threshold.

[0091] Here, by using the oxygen concentration in fuel tank 1 as a trigger criterion, the risk of combustion and explosion in fuel tank 1 is accurately detected. When the oxygen concentration in fuel tank 1 approaches a dangerous level, that is, when the oxygen concentration in fuel tank 1 is greater than or equal to a first preset threshold, the controller 5 can control the by-product gas discharged from the oxygen generator 2 to be introduced into the containment cavity, reducing the oxygen concentration in fuel tank 1 to below the first preset threshold, thereby destroying the combustion conditions at the source and improving vehicle safety.

[0092] Reference Figure 6 In some implementations, the safety information includes vehicle collision information, the detection device 4 includes a collision detection structure 42, and the preset triggering condition includes a vehicle collision.

[0093] Here, by using the collision event itself as a preset trigger condition, the controller 5 can automatically activate the inerting protection mechanism within a very short time after the collision, introducing the by-product gas into the fuel tank 1 to effectively dilute the oxygen concentration to below the lower limit of combustion, thereby improving the safety of the vehicle.

[0094] In some implementations, the connecting component 3 also includes a first control valve 32, which is disposed in the connecting pipe 31 and is communicatively connected to the controller 5. When the safety information meets the preset triggering conditions, the controller 5 controls the first control valve 32 to open and connect the connecting pipe 31 so that the by-product gas discharged from the oxygen generator 2 is introduced into the receiving cavity of the oil tank 1 through the connecting pipe 31.

[0095] Under normal vehicle operation, the first control valve 32 remains closed. This prevents the byproduct gas generated by the oxygen generator 2 from being ineffectively introduced into the fuel tank 1, and also prevents interference with the internal pressure balance of the fuel tank 1 due to continuous ventilation. When a real safety risk is detected (i.e., the safety information meets the preset trigger conditions), the controller 5 immediately controls the first control valve 32 to open, allowing the byproduct gas to be precisely injected into the fuel tank 1's containment cavity at the most needed moment, thereby significantly improving the timeliness of the inerting response and the effectiveness of safety protection. This design effectively reduces system energy consumption and operational complexity, avoiding unnecessary gas flow and valve actions. Furthermore, it avoids the problem of negative pressure in the fuel tank 1 that may result from continuous inerting, thus balancing system reliability, safety, and long-term operational stability.

[0096] Reference Figure 2 , Figure 3 and Figure 7 In some implementations, the connecting component 3 further includes a gas storage component 33, which is disposed in the connecting pipe 31. The first control valve 32 is located between the gas storage component 33 and the receiving cavity. Before the step of controlling the by-product gas discharged from the oxygen generator 2 to be introduced into the receiving cavity of the oil tank 1 through the connecting pipe 31, the control method further includes: S200: controlling the by-product gas discharged from the oxygen generator 2 to be introduced into the gas storage component 33 through the connecting pipe 31.

[0097] Safety incidents are sudden and instantaneous. By accumulating gas in advance through the gas storage chamber 33, sufficient inert gas can be supplied to the fuel tank 1 immediately after an accident, thereby improving response speed and the timeliness of protection. In addition, this structure also enhances the vehicle's fault tolerance under extreme conditions: even if a collision causes the oxygen generator 2 to lose power or the pipeline to be damaged, the inert gas stored in the gas storage chamber can still independently complete the inerting process, preventing the loss of protection function due to the interruption of the oxygen generator 2's gas supply.

[0098] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle, characterized in that, include: The fuel tank (1) has a receiving cavity for storing fuel and supplying fuel to the engine (6); An oxygen generator (2) has a first exhaust port and a second exhaust port, the first exhaust port being used to discharge oxygen and the second exhaust port being used to discharge by-product gas. A connecting assembly (3) includes a connecting pipe (31) connected between the oxygen generator (2) and the oil tank (1) for connecting the second exhaust port and the receiving cavity.

2. The vehicle according to claim 1, characterized in that, The vehicle includes a detection device (4) and a controller (5). The detection device (4) is used to acquire safety information characterizing the safety status of the vehicle. The controller (5) is communicatively connected to the detection device (4). The controller (5) is configured to control the by-product gas discharged from the oxygen generator (2) to be introduced into the containment cavity when the safety information meets a preset triggering condition.

3. The vehicle according to claim 2, characterized in that, The safety information includes the oxygen concentration in the containment cavity. The detection device (4) includes an oxygen concentration detector (41), which is disposed in the containment cavity. The oxygen concentration detector (41) is used to detect the oxygen concentration in the containment cavity. When the oxygen concentration in the containment cavity is greater than or equal to a first preset threshold, the controller (5) controls the by-product gas discharged by the oxygen generator (2) to be introduced into the containment cavity.

4. The vehicle according to claim 2, characterized in that, The safety information includes the collision information of the vehicle. The detection device (4) includes a collision detection structure (42), which is disposed on the body of the vehicle. The collision detection structure (42) is used to detect the collision information of the vehicle. In the event of a collision, the controller (5) controls the by-product gas discharged from the oxygen generator (2) to be introduced into the receiving cavity.

5. The vehicle according to claim 2, characterized in that, The connection component (3) further includes a first control valve (32), which is disposed in the connection pipeline (31). The controller (5) is communicatively connected to the first control valve (32). When the safety information meets the preset triggering conditions, the controller (5) outputs a control signal to control the first control valve (32) to open, so as to connect the connection pipeline (31).

6. The vehicle according to claim 5, characterized in that, The connecting assembly (3) further includes an air storage component (33), which has an air storage chamber. The air inlet of the air storage chamber is connected to the second exhaust port through the connected pipe (31), and the air outlet of the air storage chamber is connected to the receiving cavity through the connecting pipe (31). The first control valve (32) is located between the air outlet of the air storage chamber and the receiving cavity.

7. The vehicle according to claim 6, characterized in that, The oxygen generator (2) includes an exhaust pipe (34) and a second control valve (35). One end of the exhaust pipe (34) is connected to the outlet of the gas storage chamber, and the other end of the exhaust pipe (34) is connected to the external environment (8). The second control valve (35) is located in the exhaust pipe (34). The vehicle also includes a pressure detection structure located in the gas storage chamber. The pressure detection structure is used to detect the pressure in the gas storage chamber.

8. The vehicle according to claim 2, characterized in that, The controller (5) is communicatively connected to the oxygen generator (2). When the safety information meets the preset triggering conditions, the controller (5) outputs a control signal to control the oxygen generator (2) to turn on, so that the oxygen generator (2) discharges the oxygen and the by-product gas.

9. The vehicle according to any one of claims 1-8, characterized in that, The vehicle also includes a cooling structure, at least partially disposed on an extension path of the connecting pipe (31), the cooling structure being used for heat exchange with the by-product gas within the connecting pipe (31).

10. A control method applied to the vehicle according to any one of claims 1-9, characterized in that, The control method includes: Turn on the oxygen generator (2) so that the oxygen generator (2) discharges the oxygen and the by-product gas; The by-product gas discharged from the oxygen generator (2) is controlled to be introduced into the receiving cavity of the oil tank (1) through the connecting pipe (31).

11. The control method according to claim 10, wherein the vehicle includes a detection device (4) and a controller (5), the controller (5) being communicatively connected to the detection device (4), characterized in that, The step of controlling the by-product gas discharged from the oxygen generator (2) to be introduced into the receiving cavity of the oil tank (1) through the connecting pipe (31) includes: Turn on the detection device (4) to obtain safety information characterizing the safety status of the vehicle; When the safety information meets the preset triggering conditions, the controller (5) controls the by-product gas discharged from the oxygen generator (2) to be introduced into the receiving cavity of the oil tank (1) through the connecting pipe (31).

12. The control method according to claim 11, wherein the safety information includes the oxygen concentration in the containment cavity, and the detection device (4) includes an oxygen concentration detection element (41), characterized in that, The preset triggering condition includes the oxygen concentration in the containment cavity being greater than or equal to a first preset threshold.

13. The control method according to claim 11, wherein the safety information includes the collision information of the vehicle, and the detection device (4) includes a collision detection structure (42), characterized in that, The preset triggering condition includes the vehicle colliding.

14. The control method according to any one of claims 11-13, wherein the connecting assembly (3) further comprises a first control valve (32), the first control valve (32) being disposed in the connecting pipeline (31), the first control valve (32) being communicatively connected to the controller (5), characterized in that, When the safety information meets the preset triggering conditions, the controller (5) controls the first control valve (32) to open and connect the connecting pipe (31) so that the by-product gas discharged by the oxygen generator (2) is introduced into the receiving cavity of the oil tank (1) through the connecting pipe (31).

15. The control method according to any one of claims 11-13, wherein the connecting assembly (3) further comprises a gas storage component (33), the gas storage component (33) being disposed in the connecting pipeline (31), characterized in that, Before the step of controlling the by-product gas discharged from the oxygen generator (2) to be introduced into the receiving cavity of the oil tank (1) through the connecting pipe (31), the control method further includes: The by-product gas discharged from the oxygen generator (2) is controlled to be introduced into the gas storage unit (33) through the connecting pipe (31).

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